So the configuration is a bit weird, from our internet provider we get an IP via DHCP, there's also a whole subnet that's routed to this IP.
I solved it by adding a second interface with the static IPs (normally you would put a router in between and lose 1 IP), so now to the problem:
Every time the DHCP lease expires and IP is renewed, the interface
eth1:0 state is changed to down.
DEVICE=eth1 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=yes PEERDNS=no BOOTPROTO=dhcp DHCP_HOSTNAME=router.xxx.xxx
DEVICE=eth1:0 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=static IPADDR=xxx.xxx.xxx.xxx NETMASK=255.255.255.248
I hope the solution is a simple option I forgot, thanks for any help!
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