Bug 1826686

Summary:	renew message should be sent after renew time
Product:	Red Hat Enterprise Linux Fast Datapath	Reporter:	Jianlin Shi <jishi>
Component:	ovn2.13	Assignee:	lorenzo bianconi <lorenzo.bianconi>
Status:	CLOSED ERRATA	QA Contact:	Jianlin Shi <jishi>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	FDP 20.D	CC:	ctrautma, jishi, kfida, ralongi
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ovn2.13-20.09.0-5.el7fdn	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-12-01 15:07:02 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jianlin Shi 2020-04-22 10:36:54 UTC

Description of problem:
as described in https://tools.ietf.org/html/rfc3633#section-12.1, renew message should be sent after renew time

Version-Release number of selected component (if applicable):
ovn2.13.0-18

How reproducible:
Always

Steps to Reproduce:
1. setup prefix delegation as described in https://bugzilla.redhat.com/show_bug.cgi?id=1826683#c0
2. wait T1 and capture packets on veth0_s0

Actual results:

[root@dell-per740-42 ipv6_pd]# ip netns exec server0 tcpdump -i veth0_s0 -nnle -v                     
tcpdump: listening on veth0_s0, link-type EN10MB (Ethernet), capture size 262144 bytes                
06:32:00.494196 00:00:00:00:00:01 > 33:33:00:01:00:02, ethertype IPv6 (0x86dd), length 96: (hlim 255, next-header UDP (17) payload length: 42) fe80::200:ff:fe00:1.546 > ff02::1:2.547: [udp sum ok] dhcp6 solicit (xid=0 (client-ID hwaddr type 1 000000000001) (IA_PD IAID:8851 T1:4294967295 T2:4294967295))   
06:32:01.631477 00:00:00:00:00:01 > 33:33:00:01:00:02, ethertype IPv6 (0x86dd), length 96: (hlim 255, next-header UDP (17) payload length: 42) fe80::200:ff:fe00:1.546 > ff02::1:2.547: [udp sum ok] dhcp6 solicit (xid=0 (client-ID hwaddr type 1 000000000001) (IA_PD IAID:13542 T1:4294967295 T2:4294967295))  
06:32:02.587164 f2:07:30:65:44:92 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: (hlim 1, next-header Options (0) payload length: 36) fe80::f007:30ff:fe65:4492 > ff02::16: HBH (rtalert: 0x0000)
(padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:2 to_ex, 0 source(s)]
06:32:03.180184 f2:07:30:65:44:92 > 33:33:00:00:00:16, ethertype IPv6 (0x86dd), length 90: (hlim 1, next-header Options (0) payload length: 36) fe80::f007:30ff:fe65:4492 > ff02::16: HBH (rtalert: 0x0000)
(padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:2 to_ex, 0 source(s)]
06:32:03.534550 00:00:00:00:00:01 > 33:33:00:01:00:02, ethertype IPv6 (0x86dd), length 96: (hlim 255, next-header UDP (17) payload length: 42) fe80::200:ff:fe00:1.546 > ff02::1:2.547: [udp sum ok] dhcp6 solicit (xid=0 (client-ID hwaddr type 1 000000000001) (IA_PD IAID:43477 T1:4294967295 T2:4294967295))  
06:32:03.535065 f2:07:30:65:44:92 > 33:33:ff:00:00:01, ethertype IPv6 (0x86dd), length 86: (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::f007:30ff:fe65:4492 > ff02::1:ff00:1: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has fe80::200:ff:fe00:1                                 
          source link-address option (1), length 8 (1): f2:07:30:65:44:92                             
06:32:03.536109 00:00:00:00:00:01 > f2:07:30:65:44:92, ethertype IPv6 (0x86dd), length 86: (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::200:ff:fe00:1 > fe80::f007:30ff:fe65:4492: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is fe80::200:ff:fe00:1, Flags [router, solicited, override]
          destination link-address option (2), length 8 (1): 00:00:00:00:00:01                        
06:32:03.536132 f2:07:30:65:44:92 > 00:00:00:00:00:01, ethertype IPv6 (0x86dd), length 176: (flowlabel 0x0777e, hlim 64, next-header UDP (17) payload length: 122) fe80::f007:30ff:fe65:4492.547 > fe80::200:ff:fe00:1.546: [bad udp cksum 0x628d -> 0xdb79!] dhcp6 advertise (xid=0 (IA_PD IAID:43477 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:3600 vltime:7200) (status-code Success)) (server-ID
hwaddr/time type 1 time 640779307 fed16dedd8f8) (client-ID hwaddr type 1 000000000001) (preference 0))
06:32:03.536842 00:00:00:00:00:01 > f2:07:30:65:44:92, ethertype IPv6 (0x86dd), length 143: (hlim 255, next-header UDP (17) payload length: 89) fe80::200:ff:fe00:1.546 > fe80::f007:30ff:fe65:4492.547: [udp sum ok] dhcp6 request (xid=0 (IA_PD IAID:43477 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:3600 vltime:7200)) (server-ID hwaddr/time type 1 time 640779307 fed16dedd8f8) (client-ID hwaddr type 1 000000000001))                                                                               
06:32:03.537309 f2:07:30:65:44:92 > 00:00:00:00:00:01, ethertype IPv6 (0x86dd), length 176: (flowlabel 0x0777e, hlim 64, next-header UDP (17) payload length: 122) fe80::f007:30ff:fe65:4492.547 > fe80::200:ff:fe00:1.546: [bad udp cksum 0x628d -> 0xd679!] dhcp6 reply (xid=0 (IA_PD IAID:43477 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:3600 vltime:7200) (status-code Success)) (server-ID hwaddr/time type 1 time 640779307 fed16dedd8f8) (client-ID hwaddr type 1 000000000001) (preference 0))    
                                                                                                      




06:32:15.947658 00:00:00:00:00:01 > 33:33:00:01:00:02, ethertype IPv6 (0x86dd), length 125: (hlim 255, next-header UDP (17) payload length: 71) fe80::200:ff:fe00:1.546 > ff02::1:2.547: [udp sum ok] dhcp6
solicit (xid=0 (client-ID hwaddr type 1 000000000001) (IA_PD IAID:43477 T1:4294967295 T2:4294967295 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:4294967295 vltime:4294967295)))

<==== still send solicit after T1

06:32:15.948016 f2:07:30:65:44:92 > 00:00:00:00:00:01, ethertype IPv6 (0x86dd), length 195: (flowlabel 0x0777e, hlim 64, next-header UDP (17) payload length: 141) fe80::f007:30ff:fe65:4492.547 > fe80::200:ff:fe00:1.546: [bad udp cksum 0x62a0 -> 0xa390!] dhcp6 advertise (xid=0 (IA_PD IAID:43477 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:3600 vltime:7200) (status-code Success)) (server-ID
hwaddr/time type 1 time 640779307 fed16dedd8f8) (client-ID hwaddr type 1 000000000001) (preference 0))
06:32:15.948763 00:00:00:00:00:01 > f2:07:30:65:44:92, ethertype IPv6 (0x86dd), length 143: (hlim 255, next-header UDP (17) payload length: 89) fe80::200:ff:fe00:1.546 > fe80::f007:30ff:fe65:4492.547: [udp sum ok] dhcp6 request (xid=0 (IA_PD IAID:43477 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:3600 vltime:7200)) (server-ID hwaddr/time type 1 time 640779307 fed16dedd8f8) (client-ID hwaddr type 1 000000000001))
06:32:15.949384 f2:07:30:65:44:92 > 00:00:00:00:00:01, ethertype IPv6 (0x86dd), length 176: (flowlabel 0x0777e, hlim 64, next-header UDP (17) payload length: 122) fe80::f007:30ff:fe65:4492.547 > fe80::200:ff:fe00:1.546: [bad udp cksum 0x628d -> 0xd679!] dhcp6 reply (xid=0 (IA_PD IAID:43477 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::864c:0:0/96 pltime:3600 vltime:7200) (status-code Success)) (server-ID hwaddr/time type 1 time 640779307 fed16dedd8f8) (client-ID hwaddr type 1 000000000001) (preference 0))

Expected results:
should send renew after T1

Additional info:

Comment 3 Jianlin Shi 2020-11-09 01:50:12 UTC

Verified on ovn20.09.0-10:

20:46:57.881054 00:00:00:00:00:01 > e6:38:61:70:b1:9c, ethertype IPv6 (0x86dd), length 143: (hlim 255, next-header UDP (17) payload length: 89) fe80::200:ff:fe00:1.546 > fe80::e438:61ff:fe70:b19c.547: [udp sum ok] dhcp6 renew (xid=0 (client-ID hwaddr type 1 000000000002) (server-ID hwaddr/time type 1 time 658201053 0e4d1d36c8db) (IA_PD IAID:39634 T1:4294967295 T2:4294967295 (IA_PD-prefix 2001:1db8:3333::3ca1:0:0/96 pltime:4294967295 vltime:4294967295)))

<=== renew message is sent

20:46:57.881544 e6:38:61:70:b1:9c > 00:00:00:00:00:01, ethertype IPv6 (0x86dd), length 173: (hlim 64, next-header UDP (17) payload length: 119) fe80::e438:61ff:fe70:b19c.547 > fe80::200:ff:fe00:1.546: [bad udp cksum 0xf4d0 -> 0x183f!] dhcp6 reply (xid=0 (IA_PD IAID:39634 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::3ca1:0:0/96 pltime:3600 vltime:7200) (status-code Success)) (server-ID hwaddr/time type 1 time 658201053 0e4d1d36c8db) (client-ID hwaddr type 1 000000000002) (preference 0))

[root@dell-per740-12 bz1826686]# rpm -qa | grep -E "openvswitch|ovn"
openvswitch2.13-2.13.0-59.el7fdp.x86_64
ovn2.13-20.09.0-10.el7fdp.x86_64
openvswitch-selinux-extra-policy-1.0-15.el7fdp.noarch
ovn2.13-host-20.09.0-10.el7fdp.x86_64
ovn2.13-central-20.09.0-10.el7fdp.x86_64

Comment 4 Jianlin Shi 2020-11-09 02:01:46 UTC

Verified on rhel8 version:

21:00:29.993874 00:00:00:00:00:01 > d6:82:68:16:de:ab, ethertype IPv6 (0x86dd), length 143: (hlim 255, next-header UDP (17) payload length: 89) fe80::200:ff:fe00:1.546 > fe80::d482:68ff:fe16:deab.547: [udp sum ok] dhcp6 renew (xid=0 (client-ID hwaddr type 1 000000000001) (server-ID hwaddr/time type 1 time 658202290 eac27ade21ec) (IA_PD IAID:26573 T1:4294967295 T2:4294967295 (IA_PD-prefix 2001:1db8:3333::4827:0:0/96 pltime:4294967295 vltime:4294967295)))

<== renew message is sent

21:00:29.994220 d6:82:68:16:de:ab > 00:00:00:00:00:01, ethertype IPv6 (0x86dd), length 173: (flowlabel 0xc343c, hlim 64, next-header UDP (17) payload length: 119) fe80::d482:68ff:fe16:deab.547 > fe80::200:ff:fe00:1.546: [bad udp cksum 0x18d0 -> 0x0937!] dhcp6 reply (xid=0 (IA_PD IAID:26573 T1:10 T2:15 (IA_PD-prefix 2001:1db8:3333::4827:0:0/96 pltime:3600 vltime:7200) (status-code Success)) (server-ID hwaddr/time type 1 time 658202290 eac27ade21ec) (client-ID hwaddr type 1 000000000001) (preference 0))

[root@dell-per740-42 bz1826686]# rpm -qa | grep -E "openvswitch|ovn"                                  
ovn2.13-20.09.0-10.el8fdp.x86_64                                                                      
ovn2.13-central-20.09.0-10.el8fdp.x86_64                                                              
openvswitch2.13-2.13.0-67.el8fdp.x86_64                                                               
ovn2.13-host-20.09.0-10.el8fdp.x86_64                                                                 
openvswitch-selinux-extra-policy-1.0-23.el8fdp.noarch

Comment 6 errata-xmlrpc 2020-12-01 15:07:02 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (ovn2.13 bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:5308