> Finally , having default-nic "rtls0" i brought up SNV
> PV DomU and patched the kernel
> with mdb. Shutdown DomU. Switched default-nic to
> "rge0" and restarted same SNV PV DomU.
> This time dhcp request hasn't timed out during reboot
> and DomU loaded in DHCP mode.
> I can ping DNS servers of ISP , /etc/nsswitch.conf
> contains:-
> hosts : dns files
> However ,
> 1. Nslookup doesn't respond as usual (no internet
> access) from DomU
> (ssh connection to Dom0 works)
> I cannot create another SNV PV DomU . DHCP request
> during install times out
As was advised by Juergen Keil i added to /etc/system :-
set xnf:xnf_cksum_offload = 0
and rebooted DomU.
Patch was rollbacked:-
echo "xnb_unmop_hiwat/W0xC0" | mdb -wk
It fixed all problems with internet access and time required to obtain IP
address by DomU via DHCP at boot up.
Current issue is not connected with CR 6703227.
It's connected with wrong udp checksums generation by DHCPDISCOVER issued
via rge0 interface.
TCPDUMP report obtained on another host on the LAN
************************************************************************************
08:38:01.361741 arp who-has 192.168.1.1 tell 192.168.1.39
08:38:02.220179 IP (tos 0x0, ttl 255, id 19410, offset 0, flags [DF], proto:
UDP (17), length: 328) 0.0.0.0.bootpc > 255.255.255.255.bootps: [bad udp cksum
19ae!] BOOTP/DHCP, Request from 00:16:3e:29:b2:18 (oui Unknown), length: 300,
xid:0x872bd9e3, secs:124, flags: [none] (0x0000)
Client Ethernet Address: 00:16:3e:29:b2:18 (oui Unknown)
Vendor-rfc1048:
DHCP:DISCOVER
MSZ:1472
LT:4294967295
VC:"SUNW.i86xpv"
PR:SM+DG+NS+HN+DN+BR+VO
08:38:18.970232 arp who-has 192.168.1.40 (Broadcast) tell 192.168.1.40
08:39:05.790989 IP (tos 0x0, ttl 255, id 19411, offset 0, flags [DF], proto:
UDP (17), length: 328) 0.0.0.0.bootpc > 255.255.255.255.bootps: [bad udp cksum
daad!] BOOTP/DHCP, Request from 00:16:3e:29:b2:18 (oui Unknown), length: 300,
xid:0x872bd9e3, secs:187, flags: [none] (0x0000)
Client Ethernet Address: 00:16:3e:29:b2:18 (oui Unknown)
Vendor-rfc1048:
DHCP:DISCOVER
MSZ:1472
LT:4294967295
VC:"SUNW.i86xpv"
PR:SM+DG+NS+HN+DN+BR+VO
****************************************************************************************
Thanks Juergen for his support and attention to customers problems.
>
> I've also rebooted DomU (created with default-nic
> "rtls0" ) several time having
> default-nic "rge0". It works (a long time awaiting
> DHCP request at any reboot).
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