Dear Simon, > And can you diff the config of eno1 and eno4. # pwd /etc/sysconfig/network-scripts # diff -u ifcfg-eno1 ifcfg-eno4 --- ifcfg-eno1 2020-09-21 17:23:25.576672703 +0200 +++ ifcfg-eno4 2020-09-22 07:18:43.160532532 +0200 @@ -3,15 +3,20 @@ BROWSER_ONLY=no BOOTPROTO=none DEFROUTE=no -IPV4_FAILURE_FATAL=yes -IPV6INIT=no -IPV6_AUTOCONF=no +IPV4_FAILURE_FATAL=no +IPV6INIT=yes +IPV6_AUTOCONF=yes IPV6_DEFROUTE=no IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=stable-privacy -NAME=eno1 -UUID=1e382037-fec9-493d-a4f2-ace7d73a1e7b -DEVICE=eno1 +NAME=eno4 +UUID=dbd95c24-1ed7-4292-8dba-3934bd1476a0 +DEVICE=eno4 ONBOOT=yes -IPADDR=192.168.1.90 +IPADDR=192.168.2.98 PREFIX=24 +DNS1=10.10.100.1 +DNS2=10.10.100.2 +#DNS3=8.8.8.8 +PEERDNS=no +PEERROUTES=no > Can you show the config of eno4? # cat ifcfg-eno4 TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=none DEFROUTE=no IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=no IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=stable-privacy NAME=eno4 UUID=dbd95c24-1ed7-4292-8dba-3934bd1476a0 DEVICE=eno4 ONBOOT=yes IPADDR=192.168.2.98 PREFIX=24 DNS1=10.10.100.1 DNS2=10.10.100.2 #DNS3=8.8.8.8 PEERDNS=no PEERROUTES=no Regards, Felix