Changing delay on an eigrp-enabled interface results in an extra "via Connected" line appears in the output of show ip eigrp topology for that interface

[taspelund]

Things you may try first

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• Did you check if this is a duplicate issue?
• Did you test it on the latest FRRouting/frr master branch?

Description

Changing delay for an interface enabled for EIGRP results in an additional "via Connected line in the output of show ip eigrp topology.

Steps to Reproduce

1. Enable EIGRP on an interface (network x.x.x.x/yy)
2. Change delay on that interface (interface ; delay xxxx)
3. Check show ip eigrp topology

Expected behavior:
No new lines added to output of show command

Actual behavior:
Extra lines added to output of show command

Components

eigrpd

Versions

• OS: Cumulus Linux VX 3.7.2
• Kernel: Linux 4.1.0-cl-7-amd64
• FRR: 4.0+cl3u8

Attachments

Console session:

EIGRP Topology Table for AS(10)/ID(1.1.1.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply
       r - reply Status, s - sia Status

P  10.0.0.0/24, 1 successors, FD is 28160, serno: 0 
       via Connected, swp51
P  10.0.1.0/24, 1 successors, FD is 30720, serno: 0 
       via 10.0.0.2 (30720/28160), swp51
leaf01(config)# int swp51
leaf01(config-if)# delay 1111
leaf01(config-if)# do show ip eigrp topology

EIGRP Topology Table for AS(10)/ID(1.1.1.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply
       r - reply Status, s - sia Status

P  10.0.0.0/24, 2 successors, FD is 28160, serno: 0 
       via Connected, swp51
       via Connected, swp51
P  10.0.1.0/24, 1 successors, FD is 30720, serno: 0 
       via 144.170.138.40 (30720/28160), swp51
leaf01(config-if)# delay 2222
leaf01(config-if)# do show ip eigrp topology

EIGRP Topology Table for AS(10)/ID(1.1.1.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply
       r - reply Status, s - sia Status

P  10.0.0.0/24, 3 successors, FD is 28160, serno: 0 
       via Connected, swp51
       via Connected, swp51
       via Connected, swp51
P  10.0.1.0/24, 1 successors, FD is 30720, serno: 0 
       via 129.0.0.0 (30720/28160), swp51
leaf01(config-if)# delay 3333
leaf01(config-if)# do show ip eigrp topology

EIGRP Topology Table for AS(10)/ID(1.1.1.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply
       r - reply Status, s - sia Status

P  10.0.0.0/24, 4 successors, FD is 28160, serno: 0 
       via Connected, swp51
       via Connected, swp51
       via Connected, swp51
       via Connected, swp51
P  10.0.1.0/24, 1 successors, FD is 30720, serno: 0 
       via 128.206.138.40 (30720/28160), swp51
       via 161.0.0.0 (596992/28160), swp51
leaf01(config-if)# delay 1111
leaf01(config-if)# do show ip eigrp topology

EIGRP Topology Table for AS(10)/ID(1.1.1.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply
       r - reply Status, s - sia Status

P  10.0.0.0/24, 5 successors, FD is 28160, serno: 0 
       via Connected, swp51
       via Connected, swp51
       via Connected, swp51
       via Connected, swp51
       via Connected, swp51
P  10.0.1.0/24, 1 successors, FD is 30720, serno: 0 
       via 128.5.114.40 (30720/28160), swp51
       via 225.0.0.0 (596992/28160), swp51```