DHCP address detection isn't aware of DHCPv6 Rapid Commits
The DHCP address detection code only looks for the standard four-message DHCPv6 transaction, and only marks the start of the transaction when the client sends the Request message. Since the illumos dhcpagent program hardcodes the Rapid Commit option in the Solicit message (see section 22.14 of RFC3315), any cooperating server will send back an immediate Reply, forgoing the rest of the process, and skipping the Request message step.
This bug shows up when using software like dnsmasq, which will acknowledge Rapid Commit, but not with others, like ISC dhcpd, which will ignore the Rapid Commit option and send back an Advertise message.
Updated by Electric Monk almost 6 years ago
- Status changed from New to Closed
- % Done changed from 90 to 100
commit 146e34b68e0380c276523b9f82600fb18f9730a9 Author: Cody Peter Mello <firstname.lastname@example.org> Date: 2015-09-03T04:32:39.000Z 6180 DHCP address detection isn't aware of DHCPv6 Rapid Commits Reviewed by: Patrick Mooney <email@example.com> Reviewed by: Robert Mustacchi <firstname.lastname@example.org> Reviewed by: Dan McDonald <email@example.com> Reviewed by: Sebastian Wiedenroth <firstname.lastname@example.org> Approved by: Richard Lowe <email@example.com>