here is two tcpdumps of dhcp ports
root@gwd:~# tcpdump -vv -i enp3s0 -n port 67 and port 68
tcpdump: listening on enp3s0, link-type EN10MB (Ethernet), capture size 262144
bytes
SYSTEMD [NOT WORKED]
19:58:01.261864 IP (tos 0xc0, ttl 64, id 0, offset 0, flags [none], proto UDP
(17), length 300)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from
c8:d3:a3:50:02:33, length 272, xid 0x495060a3, secs 1539, Flags [none] (0x0000)
Client-Ethernet-Address c8:d3:a3:50:02:33
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Client-ID Option 61, length 7: ether c8:d3:a3:50:02:33
Parameter-Request Option 55, length 8:
Subnet-Mask, Default-Gateway, Hostname, Domain-Name
Domain-Name-Server, MTU, Static-Route, Classless-Static-Route
MSZ Option 57, length 2: 576
Hostname Option 12, length 3: "gwd"
DHCLIENT [WORKED]
20:02:33.187353 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 from
c8:d3:a3:50:02:33, length 300, xid 0x5986fc7c, Flags [none] (0x0000)
Client-Ethernet-Address c8:d3:a3:50:02:33
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Requested-IP Option 50, length 4: 213.141.128.50
Hostname Option 12, length 3: "gwd"
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
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https://bugs.launchpad.net/bugs/1831470
Title:
systemd dhcp don't work on vlan
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