Hello I created two virtual servers with FRR 6.0.2 installed on it.. Both has 3 interfaces 1st interafce is wan interafce 2nd and third interfaces are for test of eigrp.. 1st server has this config interface eth1 ip address 192.168.100.1/24 ! router eigrp 100 network 192.168.100.0/24 network 192.168.200.0/24 redistribute kernel redistribute connected 2nd server has; interface eth1 ip address 192.168.100.2/24 ! interface eth3 ip address 192.168.200.2/24 shutdown ! router eigrp 100 network 192.168.100.0/24 network 192.168.200.0/24 redistribute kernel redistribute connected ! I can see the 192.168.200.0/24 routing on server1 via eigrp.. which is nice.. The problem is, if i shutdown the interface 2 on server2.. nothing happens.. centos1# conf t centos1(config)# interface eth3 centos1(config-if)# shutdown centos1(config-if)# end and on sh run i have; interface eth3 ip address 192.168.200.2/24 shutdown but i can still ping this intrface from server1. and on server2 ip addr output as follows; 6: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 62:9c:df:28:36:4a brd ff:ff:ff:ff:ff:ff inet 192.168.200.2/24 brd 192.168.200.255 scope global eth3 valid_lft forever preferred_lft forever It is really strange. It seems shutdown command does not work.