diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 30a1e04a1..b6422a627 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   Test-in-Qemu:
-    #if: ${{ false }} # disable for now
+    if: ${{ false }} # disable for now
     runs-on: ubuntu-24.04
     name: Test in Qemu (${{ matrix.distro }})
     strategy:
@@ -120,7 +120,7 @@ jobs:
           libpcre3-dev libssl-dev liblua5.1-0-dev kmod python3-pip 
           libxml2-dev libxslt1-dev zlib1g-dev 
           iproute2 ppp pppoe isc-dhcp-client timelimit && 
-          (sudo pip3 install pytest pytest-dependency || sudo pip3 install --break-system-packages pytest pytest-dependency)"
+          (sudo pip3 install pytest pytest-dependency pytest-order || sudo pip3 install --break-system-packages pytest pytest-dependency pytest-order)"
       - name: Copy source code to target OS
         run: |
           tar -Jcf accel-ppp.tar.xz accel-ppp
@@ -139,7 +139,7 @@ jobs:
         timeout-minutes: 5
         run: >
           ssh -i ssh-key -p2222 user@localhost "cd accel-ppp/tests && 
-          sudo python3 -m pytest -Wall -v -m \"not ipoe_driver and not vlan_mon_driver\""
+          sudo python3 -m pytest -Wall --order-dependencies -v -m \"not ipoe_driver and not vlan_mon_driver\""
       - name: Display processes and dmesg after tests
         if: ${{ always() }}
         run: >
@@ -157,7 +157,7 @@ jobs:
         if: ${{ always() }}
         run: >
           ssh -i ssh-key -p2222 user@localhost "cd accel-ppp/tests && 
-          sudo python3 -m pytest -Wall -v -m \"not vlan_mon_driver\""
+          sudo python3 -m pytest -Wall --order-dependencies -v -m \"not vlan_mon_driver\""
       - name: Display processes and dmesg after tests
         if: ${{ always() }}
         run: >
@@ -174,15 +174,145 @@ jobs:
         timeout-minutes: 5
         run: >
           ssh -i ssh-key -p2222 user@localhost "cd accel-ppp/tests && 
-          sudo python3 -m pytest -Wall -v"
+          sudo python3 -m pytest -Wall --order-dependencies -v"
       - name: Display processes and dmesg after tests
         if: ${{ always() }}
         run: >
           ssh -i ssh-key -p2222 user@localhost "ps aux | grep accel- && 
           sudo dmesg"
 
-  Test-in-GH:
+  Test-in-Alpine:
     #if: ${{ false }} # disable for now
+    runs-on: ubuntu-24.04
+    name: Test in Qemu (Alpine)
+
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          path: "accel-ppp"
+      - name: Install qemu and required tools
+        run: >
+          sudo apt update && 
+          NEEDRESTART_SUSPEND=1 DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true sudo -E apt -y install qemu-system-x86 qemu-utils cloud-image-utils cpu-checker cloud-image-utils wget openssh-client screen
+      - name: Check kvm support
+        run: sudo kvm-ok
+      - name: Prepare cloud-init image disk
+        run: |
+          ssh-keygen -t ed25519 -q -N "" -f ssh-key
+          echo "instance-id: $(uuidgen || echo i-abcdefg)" > init-meta
+          echo "#cloud-config" > init-data
+          echo "package_update: true" >> init-data
+          echo "package_upgrade: true" >> init-data
+          echo "package_reboot_if_required: false" >> init-data
+          echo "users:" >> init-data
+          echo "  - default" >> init-data
+          echo "  - name: alpine" >> init-data
+          echo "    shell: /bin/bash" >> init-data
+          echo "    ssh_authorized_keys:" >> init-data
+          echo "      - "`cat ssh-key.pub` >> init-data
+          echo "power_state:">> init-data
+          echo "    mode: poweroff">> init-data
+          cat init-data
+          cloud-localds init.img init-data init-meta
+      - name: Download and resize target OS cloud image
+        run: |
+          mkdir img
+          # we need to use metal image because virt image doesn't provide pppoe driver (https://gitlab.alpinelinux.org/alpine/aports/-/issues/13739)
+          wget -nv https://dl-cdn.alpinelinux.org/alpine/latest-stable/releases/cloud/nocloud_alpine-3.20.2-x86_64-bios-cloudinit-metal-r0.qcow2 -O img/image
+          qemu-img resize -f qcow2 img/`ls -1 img` +2G
+      - name: Run target OS first time (for cloud-init actions)
+        run: sudo qemu-system-x86_64 -enable-kvm -cpu host -m 4096 -nographic -drive format=qcow2,file=img/`ls -1 img` -drive format=raw,file=init.img
+      - name: Run target OS
+        run: sudo screen -dmS qemu qemu-system-x86_64 -enable-kvm -cpu host -net nic -net user,hostfwd=tcp::2222-:22 -m 4096 -nographic -drive format=qcow2,file=img/`ls -1 img`
+      - name: Check that target OS is running
+        run: |
+          sleep 1
+          sudo screen -ls
+      - name: Wait for ssh connection
+        timeout-minutes: 30
+        run: >
+          while ! ssh -o StrictHostKeyChecking=accept-new -p2222 -o ConnectTimeout=5 -i ssh-key alpine@localhost "exit 0";
+          do
+          echo "Trying to establish ssh connection";
+          sleep 5;
+          done;
+          cat ~/.ssh/known_hosts
+      - name: Display free space, current dir, kernel version and test doas
+        run: |
+          ssh -i ssh-key -p2222 alpine@localhost "df -h"
+          ssh -i ssh-key -p2222 alpine@localhost "pwd"
+          ssh -i ssh-key -p2222 alpine@localhost "uname -a"
+          ssh -i ssh-key -p2222 alpine@localhost "doas cat /etc/passwd"
+      - name: Install build tools (on target OS)
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "doas apk add --no-cache git cmake make g++ pcre-dev libressl-dev linux-headers libucontext-dev lua5.1-dev linux-lts-dev py3-pip 
+          ppp ppp-pppoe && 
+          (doas pip3 install pytest pytest-dependency pytest-order || doas pip3 install --break-system-packages pytest pytest-dependency pytest-order)"
+      - name: Copy source code to target OS
+        run: |
+          tar -Jcf accel-ppp.tar.xz accel-ppp
+          scp -i ssh-key -P2222 accel-ppp.tar.xz alpine@localhost:
+          ssh -i ssh-key -p2222 alpine@localhost "tar -xf accel-ppp.tar.xz"
+      - name: Build accel-ppp
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "cd accel-ppp &&
+          mkdir build && cd build &&
+          cmake -DBUILD_IPOE_DRIVER=TRUE -DBUILD_VLAN_MON_DRIVER=TRUE -DCMAKE_INSTALL_PREFIX=/usr 
+          -DKDIR=/usr/src/linux-headers-\`uname -r\` 
+          -DLUA=TRUE -DSHAPER=TRUE -DRADIUS=TRUE .. &&
+          make && doas make install"
+
+      - name: Run tests (not related to ipoe and vlan_mon drivers)
+        timeout-minutes: 5
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "cd accel-ppp/tests && 
+          doas python3 -m pytest -Wall --order-dependencies -v -m \"not ipoe_driver and not vlan_mon_driver\""
+      - name: Display processes and dmesg after tests
+        if: ${{ always() }}
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "ps aux | grep accel- && 
+          doas dmesg"
+
+      - name: Insert ipoe kernel module
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "cd accel-ppp &&
+          doas insmod build/drivers/ipoe/driver/ipoe.ko &&
+          lsmod | grep ipoe "
+
+      - name: Run tests (not related to vlan_mon drivers)
+        timeout-minutes: 5
+        if: ${{ always() }}
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "cd accel-ppp/tests && 
+          doas python3 -m pytest -Wall --order-dependencies -v -m \"not vlan_mon_driver\""
+      - name: Display processes and dmesg after tests
+        if: ${{ always() }}
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "ps aux | grep accel- && 
+          doas dmesg"
+
+      - name: Insert vlan_mon kernel module
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "cd accel-ppp &&
+          doas insmod build/drivers/vlan_mon/driver/vlan_mon.ko &&
+          lsmod | grep vlan_mon"
+
+      - name: Run tests (all)
+        timeout-minutes: 5
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "cd accel-ppp/tests && 
+          doas python3 -m pytest -Wall --order-dependencies -v"
+      - name: Display processes and dmesg after tests
+        if: ${{ always() }}
+        run: >
+          ssh -i ssh-key -p2222 alpine@localhost "ps aux | grep accel- && 
+          doas dmesg"
+
+
+  Test-in-GH:
+    if: ${{ false }} # disable for now
     strategy:
       fail-fast: false
       matrix:
@@ -200,7 +330,7 @@ jobs:
 
       - name: Install testing tools (using pip)
         run: >
-          sudo pip3 install pytest pytest-dependency || sudo pip3 install --break-system-packages pytest pytest-dependency
+          sudo pip3 install pytest pytest-dependency pytest-order || sudo pip3 install --break-system-packages pytest pytest-dependency pytest-order
 
       - name: Check out repository code
         uses: actions/checkout@v4
@@ -232,10 +362,10 @@ jobs:
       - name: Run tests
         timeout-minutes: 5
         working-directory: ./tests
-        run: sudo python3 -m pytest -Wall -v
+        run: sudo python3 -m pytest -Wall --order-dependencies -v
 
   Test-in-GH-Coverage:
-    #if: ${{ false }} # disable for now
+    if: ${{ false }} # disable for now
     strategy:
       fail-fast: false
       matrix:
@@ -253,7 +383,7 @@ jobs:
 
       - name: Install testing tools (using pip)
         run: >
-          sudo pip3 install pytest pytest-dependency gcovr || sudo pip3 install --break-system-packages pytest pytest-dependency gcovr
+          sudo pip3 install pytest pytest-dependency pytest-order gcovr || sudo pip3 install --break-system-packages pytest pytest-dependency pytest-order gcovr
 
       - name: Check out repository code
         uses: actions/checkout@v4
@@ -286,7 +416,7 @@ jobs:
       - name: Run tests (for coverage report) (fail is ok)
         timeout-minutes: 5
         working-directory: ./tests
-        run: sudo python3 -m pytest -Wall -v || exit 0
+        run: sudo python3 -m pytest -Wall --order-dependencies -v || exit 0
 
       - name: Generate coverage reports (default(txt), csv, html)
         run: |
diff --git a/accel-pppd/ctrl/pppoe/pppoe.c b/accel-pppd/ctrl/pppoe/pppoe.c
index dd623accb..8678db800 100644
--- a/accel-pppd/ctrl/pppoe/pppoe.c
+++ b/accel-pppd/ctrl/pppoe/pppoe.c
@@ -1394,6 +1394,8 @@ static void pppoe_add_interface_re(const char *opt, void *cli)
 	re = pcre_compile2(pattern, 0, NULL, &pcre_err, &pcre_offset, NULL);
 
 	if (!re) {
+        if (cli)
+			cli_sendv(cli, "pppoe: %s at %i\r\n", pcre_err, pcre_offset);
 		log_error("pppoe: %s at %i\r\n", pcre_err, pcre_offset);
 		return;
 	}
diff --git a/tests/README.md b/tests/README.md
index d062ed469..689a16d8f 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -6,7 +6,7 @@ These tests are done for Ubuntu and Debian distros. Please use latest stable Deb
 
 Install pytest
 
-Using apt: `sudo apt install python3-pytest python3-pytest-dependency` or using pip: `sudo pip3 install pytest pytest-dependency`. 
+Using apt: `sudo apt install python3-pytest python3-pytest-dependency python3-pytest-order` or using pip: `sudo pip3 install pytest pytest-dependency pytest-order`.
 
 pytest-dependency version must be >= 0.5 (with 'scope' support)
 
@@ -43,13 +43,13 @@ sudo insmod build/drivers/ipoe/driver/ipoe.ko
 
 ```bash
 # from this dir (tests)
-sudo python3 -m pytest -Wall -v
+sudo python3 -m pytest -Wall --order-dependencies -v
 ```
 
 To skip tests related to ipoe and vlan_mon kernel modules:
 ```bash
 # from this dir (tests)
-sudo python3 -m pytest -Wall -v -m "not ipoe_driver and not vlan_mon_driver"
+sudo python3 -m pytest -Wall --order-dependencies -v -m "not ipoe_driver and not vlan_mon_driver"
 ```
 
 ## Preparations (for coverage report)
@@ -83,7 +83,7 @@ Then insert kernel modules (ipoe.ko and vlan-mon.ko)
 
 ```bash
 # from root dir (parent for this dir)
-sudo python3 -m pytest -Wall tests -v # execute tests to collect coverage data
+sudo python3 -m pytest -Wall --order-dependencies tests -v # execute tests to collect coverage data
 mkdir tests/report
 gcovr --config=tests/gcovr.conf # default report
 gcovr --config=tests/gcovr.conf --csv # csv report
diff --git a/tests/accel-pppd/test_basic.py b/tests/accel-pppd/general/test_basic.py
similarity index 99%
rename from tests/accel-pppd/test_basic.py
rename to tests/accel-pppd/general/test_basic.py
index 2b2c6f719..fe2f80931 100644
--- a/tests/accel-pppd/test_basic.py
+++ b/tests/accel-pppd/general/test_basic.py
@@ -19,9 +19,11 @@ def accel_pppd_config():
     log_tcp
     #log_pgsql
 
+    connlimit
     pptp
     l2tp
     sstp
+    radius
     pppoe
     ipoe
 
@@ -30,7 +32,6 @@ def accel_pppd_config():
     auth_chap_md5
     auth_pap
 
-    radius
     chap-secrets
 
     ippool
@@ -38,8 +39,7 @@ def accel_pppd_config():
     pppd_compat
     shaper
     #net-snmp
-    logwtmp
-    connlimit
+    #logwtmp
 
     ipv6_nd
     ipv6_dhcp
diff --git a/tests/accel-pppd/general/test_pcre_negative_cases.py b/tests/accel-pppd/general/test_pcre_negative_cases.py
new file mode 100644
index 000000000..788b606a7
--- /dev/null
+++ b/tests/accel-pppd/general/test_pcre_negative_cases.py
@@ -0,0 +1,65 @@
+import pytest
+from common import process
+
+
+@pytest.fixture()
+def accel_pppd_config():
+    return """
+    [modules]
+    radius
+    pppoe
+
+    [core]
+    log-error=/dev/stderr
+
+    [log]
+    log-debug=/dev/stdout
+    log-file=/dev/stdout
+    log-emerg=/dev/stderr
+    level=5
+
+    [cli]
+    tcp=127.0.0.1:2001
+    
+    [radius]
+    
+    [pppoe]
+    """
+
+
+# test pcre-related negative cases
+def test_pcre_negative_cases(accel_pppd_instance, accel_cmd):
+
+    # test that accel-pppd started successfully
+    assert accel_pppd_instance
+
+    (exit_sh_sess, out_sh_sess, err_sh_sess) = process.run([accel_cmd, "show sessions match username 00("])
+    # test that 'show sessions' with invalid regexp reports the issue and error position
+    assert (
+        exit_sh_sess == 0
+        and len(out_sh_sess) > 0
+        and err_sh_sess == ""
+        and "match: " in out_sh_sess
+        and "at 3" in out_sh_sess
+    )
+
+
+    (exit_iface_add, out_iface_add, err_iface_add) = process.run([accel_cmd, "pppoe interface add re:000("])
+    # test that 'pppoe interface add' with invalid regexp reports the issue and error position
+    assert (
+        exit_iface_add == 0
+        and len(out_iface_add) > 0
+        and err_iface_add == ""
+        and "pppoe: " in out_iface_add
+        and "at 4" in out_iface_add
+    )
+
+    (exit_term, out_term, err_term) = process.run([accel_cmd, "terminate match username 00("])
+    # test that 'terminate' with invalid regexp reports the issue and error position
+    assert (
+        exit_term == 0
+        and len(out_term) > 0
+        and err_term == ""
+        and "match: " in out_term
+        and "at 3" in out_term
+    )
diff --git a/tests/accel-pppd/ipoe/dhcpv4/test_ipoe_shared_session_wo_auth.py b/tests/accel-pppd/ipoe/dhcpv4/test_ipoe_shared_session_wo_auth.py
index 104e4e9b7..7ebb420a3 100644
--- a/tests/accel-pppd/ipoe/dhcpv4/test_ipoe_shared_session_wo_auth.py
+++ b/tests/accel-pppd/ipoe/dhcpv4/test_ipoe_shared_session_wo_auth.py
@@ -9,7 +9,8 @@ def accel_pppd_config(veth_pair_netns):
     return (
         """
     [modules]
-    pppoe
+    connlimit
+    radius
     ipoe
     ippool
 
@@ -20,16 +21,23 @@ def accel_pppd_config(veth_pair_netns):
     [cli]
     tcp=127.0.0.1:2001
 
+    [core]
+    log-error=/dev/stderr
+
     [log]
     log-debug=/dev/stdout
+    log-file=/dev/stdout
+    log-emerg=/dev/stderr
     level=5
 
+    [radius]
+
     [ipoe]
     noauth=1
     shared=1
     gw-ip-address=192.0.2.1/24
-    interface="""
-        + veth_pair_netns["veth_a"]
+    interface=re:."""
+        + veth_pair_netns["veth_a"][1:]
     )
 
 
diff --git a/tests/accel-pppd/pppoe/test_pppoe_disc.py b/tests/accel-pppd/pppoe/test_pppoe_disc.py
index eb069c42c..64a0d295a 100644
--- a/tests/accel-pppd/pppoe/test_pppoe_disc.py
+++ b/tests/accel-pppd/pppoe/test_pppoe_disc.py
@@ -8,15 +8,23 @@ def accel_pppd_config(veth_pair_netns):
     return (
         """
     [modules]
+    radius
     pppoe
 
+    [core]
+    log-error=/dev/stderr
+
     [log]
     log-debug=/dev/stdout
+    log-file=/dev/stdout
+    log-emerg=/dev/stderr
     level=5
 
     [cli]
     tcp=127.0.0.1:2001
 
+    [radius]
+
     [pppoe]
     ac-name=test-accel
     interface="""
diff --git a/tests/accel-pppd/pppoe/test_pppoe_pado_delay.py b/tests/accel-pppd/pppoe/test_pppoe_pado_delay.py
index 96c73bf87..3a93d9208 100644
--- a/tests/accel-pppd/pppoe/test_pppoe_pado_delay.py
+++ b/tests/accel-pppd/pppoe/test_pppoe_pado_delay.py
@@ -30,15 +30,23 @@ def accel_pppd_config(veth_pair_netns):
     return (
         """
     [modules]
+    radius
     pppoe
 
+    [core]
+    log-error=/dev/stderr
+
     [log]
     log-debug=/dev/stdout
+    log-file=/dev/stdout
+    log-emerg=/dev/stderr
     level=5
 
     [cli]
     tcp=127.0.0.1:2001
 
+    [radius]
+
     [pppoe]
     ac-name=test-accel
     pado-delay=1500
diff --git a/tests/accel-pppd/pppoe/test_pppoe_session_wo_auth.py b/tests/accel-pppd/pppoe/test_pppoe_session_wo_auth.py
index 0c8aa2c07..822ef7b87 100644
--- a/tests/accel-pppd/pppoe/test_pppoe_session_wo_auth.py
+++ b/tests/accel-pppd/pppoe/test_pppoe_session_wo_auth.py
@@ -9,12 +9,18 @@ def accel_pppd_config(veth_pair_netns):
     return (
         """
     [modules]
+    radius
     pppoe
     auth_pap
     ippool
 
+    [core]
+    log-error=/dev/stderr
+
     [log]
     log-debug=/dev/stdout
+    log-file=/dev/stdout
+    log-emerg=/dev/stderr
     level=5
 
     [auth]
@@ -27,6 +33,8 @@ def accel_pppd_config(veth_pair_netns):
     [cli]
     tcp=127.0.0.1:2001
 
+    [radius]
+
     [pppoe]
     interface="""
         + veth_pair_netns["veth_a"]
@@ -47,7 +55,7 @@ def pppd_config(veth_pair_netns):
     mtu 1492
     noaccomp
     default-asyncmap
-    plugin rp-pppoe.so
+    plugin pppoe.so
     user loginAB
     password pass123
     nic-"""
@@ -69,7 +77,7 @@ def test_pppoe_session_wo_auth(pppd_instance, accel_cmd):
         (exit, out, err) = process.run(
             [
                 accel_cmd,
-                "show sessions match username loginAB username,ip,state",
+                "show sessions match username log.nAB username,ip,state",
             ]
         )
         assert exit == 0  # accel-cmd fails
diff --git a/tests/accel-pppd/pppoe/test_pppoe_vlan_mon.py b/tests/accel-pppd/pppoe/test_pppoe_vlan_mon.py
index 670abc330..e6e9f48a7 100644
--- a/tests/accel-pppd/pppoe/test_pppoe_vlan_mon.py
+++ b/tests/accel-pppd/pppoe/test_pppoe_vlan_mon.py
@@ -13,15 +13,23 @@ def accel_pppd_config(veth_pair_netns):
     print(veth_pair_netns)
     return """
     [modules]
+    radius
     pppoe
 
+    [core]
+    log-error=/dev/stderr
+
     [log]
     log-debug=/dev/stdout
+    log-file=/dev/stdout
+    log-emerg=/dev/stderr
     level=5
 
     [cli]
     tcp=127.0.0.1:2001
 
+    [radius]
+    
     [pppoe]
     ac-name=test-accel
     vlan-mon=%s,10-20