Last test I did was to see if IB DHCP would get the BROADCAST flag on IB
interfaces. It did. Now, I removed:
ip->client->config->bootp_broadcast_always = 1;
from setup_ib_interface (when preparing for DHCP REQUEST), so I could
check if the option:
bootp-broadcast-always
from the config file (added by this patch also) to check if it makes a
difference.
====
## without bootp-broadcast-always
tcpdump: listening on ib0, link-type LINUX_SLL (Linux cooked), capture size
65535 bytes
13:34:47.376362 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP
(17), length 328)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request, length
300, htype 32, hlen 0, xid 0x5f7f9774, Flags [none] (0x0000)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Hostname Option 12, length 5: "dixie"
Parameter-Request Option 55, length 13:
Subnet-Mask, BR, Time-Zone, Default-Gateway
Domain-Name, Domain-Name-Server, Option 119, Hostname
Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
NTP
Client-ID Option 61, length 17: hardware-type 56,
30:3a:30:30:3a:30:30:3a:34:38:3a:46:45:3a:38:30
END Option 255, length 0
PAD Option 0, length 0, occurs 15
## with bootp-broadcast-always
13:51:10.735292 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP
(17), length 328)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request, length
300, htype 32, hlen 0, xid 0x5bbf492d, Flags [Broadcast] (0x8000)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Hostname Option 12, length 5: "dixie"
Parameter-Request Option 55, length 13:
Subnet-Mask, BR, Time-Zone, Default-Gateway
Domain-Name, Domain-Name-Server, Option 119, Hostname
Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
NTP
Client-ID Option 61, length 17: hardware-type 56,
30:3a:30:30:3a:30:30:3a:34:38:3a:46:45:3a:38:30
END Option 255, length 0
PAD Option 0, length 0, occurs 15
====
So the following statement in dhclient.conf
interface "ib0" {
send dhcp-client-identifier = "80:00:00:48:FE:80";
bootp-broadcast-always;
}
Is working good also.
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https://bugs.launchpad.net/bugs/1529815
Title:
InfiniBand DHCP flow with PRA and DHCP relay not working
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