Hi All, After investigate the codes for command "configure", found that when delete/add channel, the function proto_configure_channel() always return value "1" , that mean the same is true in function bgp_reconfigure(), line 917 of proto.c will ignore the change(add/delete channel).... Is my understand correct ? Thanks Arvin From: Arvin Gan Sent: Friday, June 22, 2018 5:23 PM To: bird-users@network.cz Subject: BGP channel add/remove Hi All, I am using Bird 2.0.2 version, I create a BGP instance with one channel IPV4, that all work normally. Then I modified configuration file and add new channel IPV6, and using command "configure" under birdc , found the new added channel IPV6 is not announced to peer and channel ipv6 is down state. Then I used "restart bgp", all channels IPV4 and IPV6 are announced, work normally. I also do another test that delete channel in configure file and used "configure", it work normally. Anyone know the difference of actions between "configure" and "restart "? The command "configure" can dynamically modify the BGP protocol configuration, cant the action "configure" re-announce the added/removed capability to peer to update ? Appreciated your help in advance...... Thanks Arvin