Hi, I am facing issue with secondary ip addresses in 2.6.14 kernel after setting the proc entry ?promote_secondaries? to 1. Code to set proc entry ?promote_secondaries. net.ipv4.conf.default.promote_secondaries = 1 cat /proc/sys/net/ipv4/conf/bond1/promote_secondaries 1 Problem statement:- Secondary ip addresses become non functional after deleting the primary ip address. Even self ping to secondary ip address does not work. I can not see this issue with secondary ip address in 2.6.27 kernel. Query: - It is a known issue in 2.6.14 kernel? Is there any configuration options that needs to be set for secondary ip addresses to be functional in 2.6.14? Add IP address on bond1 interface:- ip add add 10.1.2.3/24 dev bond1 ip add add 10.1.2.4/24 dev bond1 ip add add 10.1.2.5/24 dev bond1 ip add add 10.1.2.6/24 dev bond1 ip add add 10.1.2.7/24 dev bond1 ip add show bond1 12: bond1: <BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue link/ether 00:80:f9:8b:b6:f8 brd ff:ff:ff:ff:ff:ff inet 172.25.0.3/16 brd 172.25.255.255 scope global bond1 inet 10.1.2.3/24 scope global bond1 inet 10.1.2.4/24 scope global secondary bond1 inet 10.1.2.5/24 scope global secondary bond1 inet 10.1.2.6/24 scope global secondary bond1 inet 10.1.2.7/24 scope global secondary bond1 inet6 fe80::200:ff:fe00:0/64 scope link valid_lft forever preferred_lft forever Delete the primary IP address: ip add delete 10.1.2.3/24 dev bond1 ip add show bond1 12: bond1: <BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue link/ether 00:80:f9:8b:b6:f8 brd ff:ff:ff:ff:ff:ff inet 172.25.0.3/16 brd 172.25.255.255 scope global bond1 inet 10.1.2.4/24 scope global bond1 inet 10.1.2.5/24 scope global secondary bond1 inet 10.1.2.6/24 scope global secondary bond1 inet 10.1.2.7/24 scope global secondary bond1 inet6 fe80::200:ff:fe00:0/64 scope link valid_lft forever preferred_lft forever Ping output: ping 10.1.2.4 PING 10.1.2.4 (10.1.2.4) 56(84) bytes of data. 64 bytes from 10.1.2.4: icmp_seq=1 ttl=64 time=0.033 ms 64 bytes from 10.1.2.4: icmp_seq=2 ttl=64 time=0.026 ms --- 10.1.2.4 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 0.026/0.029/0.033/0.006 ms Rest of the secondary ip addresses are not pingable. ping 10.1.2.5 PING 10.1.2.5 (10.1.2.5) 56(84) bytes of data.

From 10.1.2.4 icmp_seq=1 Destination Host Unreachable From 10.1.2.4 icmp_seq=2 Destination Host Unreachable

--- 10.1.2.5 ping statistics --- 4 packets transmitted, 0 received, +2 errors, 100% packet loss, time 3000ms , pipe 2 ping 10.1.2.6 PING 10.1.2.6 (10.1.2.6) 56(84) bytes of data.

From 10.1.2.4 icmp_seq=1 Destination Host Unreachable From 10.1.2.4 icmp_seq=2 Destination Host Unreachable From 10.1.2.4 icmp_seq=3 Destination Host Unreachable

--- 10.1.2.6 ping statistics --- 4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3002ms , pipe 3 ping 10.1.2.7 PING 10.1.2.7 (10.1.2.7) 56(84) bytes of data.

From 10.1.2.4 icmp_seq=1 Destination Host Unreachable From 10.1.2.4 icmp_seq=2 Destination Host Unreachable From 10.1.2.4 icmp_seq=3 Destination Host Unreachable From 10.1.2.4 icmp_seq=4 Destination Host Unreachable

--- 10.1.2.7 ping statistics --- 5 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3999ms , pipe 4 Thanks and Regards, Harshada Senad =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you