Strange behavior of policy prefix-list in VyOS 1.3

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1

Hello…
I have noticed strange behavior or policy prefix-list :
If I create prefix-list with comparator and then delete comparator prefix-list does not work.
First create prefix-list :

Set policy prefix-list xxxx rule 10 action permit
Set policy prefix-list xxxx rule 10 Le 32
Set policy prefix-list xxxx rule 10 Prefix 10.0.0.0/24

Then modify this prefix-list:

Delete policy prefix-list xxxx rule 10 Le 32

And now prefix-list looks like :

Set policy prefix-list xxxx rule 10 action permit
Set policy prefix-list xxxx rule 10 Prefix 10.0.0.0/24

But it does not works correctly.
I have checked this several times.

I delete entire rule 10 in prefix-list and create rule without comparator with new index - prefix-list works as expected.

2

Looks like a bug. When you delete the ‘le’ from existing prefix list it is not deleting it from frr:

vyos@vyos1# delete policy prefix-list test rule 10 le 32
[edit]
vyos@vyos1# show policy
 prefix-list test {
     rule 10 {
         action permit
-        le 32
         prefix 10.1.0.0/16
     }
 }
[edit]
vyos@vyos1# commit
[edit]
vyos@vyos1# show policy
 prefix-list test {
     rule 10 {
         action permit
         prefix 10.1.0.0/16
     }
 }
[edit]
vyos@vyos1# save
Saving configuration to '/config/config.boot'...
Done
[edit]
vyos@vyos1# exit
exit
vyos@vyos1:~$ vtysh

Hello, this is FRRouting (version 7.5.1-20220709-00-g886a63a59).
Copyright 1996-2005 Kunihiro Ishiguro, et al.

vyos1# show run
Building configuration...

Current configuration:
!
frr version 7.5.1-20220709-00-g886a63a59
frr defaults traditional
hostname vyos1
log syslog
log facility local7
service integrated-vtysh-config
!
ip route 0.0.0.0/0 10.0.2.2 eth0 tag 210 210
!
interface tun0
 ip ospf network broadcast
!
ip prefix-list test seq 10 permit 10.1.0.0/16 le 32
!
line vty
!
end
3

Probably related to this T3936