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http://bugzilla.quagga.net/show_bug.cgi?id=335

Summary: zebra does not get IP of interface after interface name
change
Product: Quagga
Version: CVS
Platform: Other
OS/Version: Linux
Status: NEW
Severity: normal
Priority: Very High
Component: zebra
AssignedTo: maintainers@quagga.net
ReportedBy: windo@p6drad-teel.net


When interface name is changed by:

ip link set name newname dev oldname

cpn-vpn2-test:~# vtysh -c "show interface tun0"
Interface tun0 is up, line protocol detection is disabled
index 59 metric 1 mtu 1500
flags: <UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>
inet 10.1.0.1/32 peer 10.1.0.2
9 input packets (0 multicast), 720 bytes, 0 dropped
0 input errors, 0 length, 0 overrun, 0 CRC, 0 frame
0 fifo, 0 missed
5 output packets, 320 bytes, 0 dropped
0 output errors, 0 aborted, 0 carrier, 0 fifo, 0 heartbeat
0 window, 0 collisions
cpn-vpn2-test:~# ip link set dev tun0 down
cpn-vpn2-test:~# ip link set name tunnel dev tun0
cpn-vpn2-test:~# ip link set dev tunnel up
cpn-vpn2-test:~# vtysh -c "show interface tunnel"
Interface tunnel is up, line protocol detection is disabled
index 59 metric 1 mtu 1500
flags: <UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>
65 input packets (0 multicast), 5200 bytes, 0 dropped
0 input errors, 0 length, 0 overrun, 0 CRC, 0 frame
0 fifo, 0 missed
5 output packets, 320 bytes, 0 dropped
0 output errors, 0 aborted, 0 carrier, 0 fifo, 0 heartbeat
0 window, 0 collisions

The address is lost the right after renaming the interface. This is what logs show:

2007/01/17 13:47:02 ZEBRA: netlink_parse_info: netlink-listen type
RTM_NEWLINK(16), seq=0, pid=0
2007/01/17 13:47:02 ZEBRA: interface index 61 was renamed from tun0 to tunnel
2007/01/17 13:47:02 ZEBRA: interface tun0 index 61 is now inactive.
2007/01/17 13:47:02 ZEBRA: route 10.1.0.2/32 ifindex 61 doesn't exist in rib
2007/01/17 13:47:02 ZEBRA: MESSAGE: ZEBRA_INTERFACE_ADDRESS_DELETE 10.1.0.1/32
on tun0
2007/01/17 13:47:02 ZEBRA: MESSAGE: ZEBRA_INTERFACE_DELETE tun0
2007/01/17 13:47:02 ZEBRA: MESSAGE: ZEBRA_INTERFACE_ADD tunnel
2007/01/17 13:47:02 ZEBRA: interface tunnel index 61 becomes active.
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8092e38, fib 0x8092e38
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x80922b0, fib 0x80922b0
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8092898, fib 0x8092898
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8091fc8, fib 0x8091fc8
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8091670, fib 0x8091670
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8092c58, fib 0x8092c58
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8092b68, fib 0x8092b68
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8092be0, fib 0x8092be0
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8091bd8, fib 0x8091bd8
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x80923a8, fib 0x80923a8
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8092cd0, fib 0x8092cd0
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x80919c0, fib 0x80919c0
2007/01/17 13:47:02 ZEBRA: rib_process: Updating existing route, select
0x8091dd0, fib 0x8091dd0

To get the address back to quagga, it needs to be removed and readded.



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