[Bug 4267] New: DHCP Client: accepts ACK or NAK from other servers
bugzilla at busybox.net
bugzilla at busybox.net
Thu Sep 29 05:42:29 UTC 2011
https://bugs.busybox.net/show_bug.cgi?id=4267
Summary: DHCP Client: accepts ACK or NAK from other servers
Product: Busybox
Version: 1.15.x
Platform: PC
OS/Version: Windows
Status: NEW
Severity: major
Priority: P5
Component: Networking
AssignedTo: unassigned at busybox.net
ReportedBy: bspitz at yahoo.com
CC: busybox-cvs at busybox.net
Estimated Hours: 0.0
In networking/udhcp/dhcpc.c:
I can see that the RX ACK and NAK processing does not qualify on the RFC
required DHCP option "server-id". When accept the offer or when renew, the
server-id has been saved from the offer we accpted, we should reject therefore
any ACK or NAK that does not have this required matching server-id.
I can see that when i have another dhcp server on the network (how be it a
dumb server), it NAKs my T1 renew, and then i get kicked back into discovery,
and renew the lease. For a small moment, i have no IP binded, not good.
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