I'm trying to set the OpenVPN server as a bridge with a DHCP bridge.
Operating system:
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# uname -a Linux vpn 3.16.0-4-amd64 #1 SMP Debian 3.16.43-2+deb8u2 (2017-06-26) x86_64 GNU/Linux
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# ifconfig br0 Link encap:Ethernet HWadr 00:0c:29:cd:f0:35 inet adr:172.16.91.2 Všesměr:172.16.91.255 Maska:255.255.255.0 inet6-adr: fe80::20c:29ff:fecd:f035/64 Rozsah:Linka AKTIVOVÁNO VŠESMĚROVÉ_VYSÍLÁNÍ BĚŽÍ MULTICAST MTU:1500 Metrika:1 RX packets:181104 errors:0 dropped:0 overruns:0 frame:0 TX packets:5569 errors:0 dropped:0 overruns:0 carrier:0 kolizí:0 délka odchozí fronty:0 RX bytes:10639032 (10.1 MiB) TX bytes:1136208 (1.0 MiB) eth0 Link encap:Ethernet HWadr 00:0c:29:cd:f0:35 AKTIVOVÁNO VŠESMĚROVÉ_VYSÍLÁNÍ BĚŽÍ MULTICAST MTU:1500 Metrika:1 RX packets:182526 errors:0 dropped:1493 overruns:0 frame:0 TX packets:5646 errors:0 dropped:0 overruns:0 carrier:0 kolizí:0 délka odchozí fronty:1000 RX bytes:12727670 (12.1 MiB) TX bytes:1152561 (1.0 MiB) lo Link encap:Místní smyčka inet adr:127.0.0.1 Maska:255.0.0.0 inet6-adr: ::1/128 Rozsah:Počítač AKTIVOVÁNO SMYČKA BĚŽÍ MTU:65536 Metrika:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 kolizí:0 délka odchozí fronty:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) tap0 Link encap:Ethernet HWadr 62:71:e7:a9:ca:28 inet6-adr: fe80::6071:e7ff:fea9:ca28/64 Rozsah:Linka AKTIVOVÁNO VŠESMĚROVÉ_VYSÍLÁNÍ BĚŽÍ MULTICAST MTU:1500 Metrika:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:162634 errors:0 dropped:0 overruns:0 carrier:0 kolizí:0 délka odchozí fronty:100 RX bytes:0 (0.0 B) TX bytes:12494409 (11.9 MiB)
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mode server tls-server port 443 proto tcp proto tcp-server dev tap0 script-security 2 system up up.sh down down.sh sndbuf 0 rcvbuf 0 ca ca.crt cert server.crt key server.key dh dh.pem auth SHA512 tls-auth ta.key 0 server-bridge client-to-client keepalive 10 120 cipher AES-256-CBC comp-lzo user nobody group nogroup persist-key persist-tun status openvpn-status.log verb 3 crl-verify crl.pem
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čec 10 08:40:43 vpn kernel: br0: port 2(tap0) entered forwarding state čec 10 08:40:43 vpn kernel: br0: port 2(tap0) entered forwarding state čec 10 08:40:43 vpn dhclient[1363]: Listening on LPF/tap0/36:7a:63:47:06:9e čec 10 08:40:43 vpn dhclient[1363]: Sending on LPF/tap0/36:7a:63:47:06:9e čec 10 08:40:43 vpn dhclient[1363]: Sending on Socket/fallback čec 10 08:40:43 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 3 čec 10 08:40:43 vpn openvpn[1357]: Listening on LPF/tap0/36:7a:63:47:06:9e čec 10 08:40:43 vpn openvpn[1357]: Sending on LPF/tap0/36:7a:63:47:06:9e čec 10 08:40:43 vpn openvpn[1357]: Sending on Socket/fallback čec 10 08:40:43 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 3 čec 10 08:40:46 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 4 čec 10 08:40:46 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 4 čec 10 08:40:50 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 4 čec 10 08:40:50 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 4 čec 10 08:40:54 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 11 čec 10 08:40:54 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 11 čec 10 08:40:58 vpn kernel: br0: port 2(tap0) entered forwarding state čec 10 08:41:05 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 17 čec 10 08:41:05 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 17 čec 10 08:41:22 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 7 čec 10 08:41:22 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 7 čec 10 08:41:29 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 7 čec 10 08:41:29 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 7 čec 10 08:41:36 vpn dhclient[1363]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 8 čec 10 08:41:36 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 8 čec 10 08:41:44 vpn dhclient[1363]: No DHCPOFFERS received. čec 10 08:41:44 vpn dhclient[1363]: No working leases in persistent database - sleeping. čec 10 08:41:44 vpn openvpn[1357]: No DHCPOFFERS received. čec 10 08:41:44 vpn openvpn[1357]: No working leases in persistent database - sleeping. čec 10 08:41:44 vpn ovpn-server[1382]: GID set to nogroup čec 10 08:41:44 vpn ovpn-server[1382]: UID set to nobody čec 10 08:41:44 vpn ovpn-server[1382]: Listening for incoming TCP connection on [undef] čec 10 08:41:44 vpn ovpn-server[1382]: TCPv4_SERVER link local (bound): [undef] čec 10 08:41:44 vpn ovpn-server[1382]: TCPv4_SERVER link remote: [undef] čec 10 08:41:44 vpn ovpn-server[1382]: MULTI: multi_init called, r=256 v=256 čec 10 08:41:44 vpn ovpn-server[1382]: MULTI: TCP INIT maxclients=1024 maxevents=1028 čec 10 08:41:44 vpn ovpn-server[1382]: Initialization Sequence Completed čec 10 08:41:44 vpn systemd[1]: Started OpenVPN connection to server.
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čec 10 08:41:36 vpn openvpn[1357]: DHCPDISCOVER on tap0 to 255.255.255.255 port 67 interval 8
Thank you.