** Changed in: network-manager (Ubuntu)
Status: New => Incomplete
** Changed in: network-manager (Ubuntu)
Importance: Undecided => Low
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https://bugs.launchpad.net/bugs/616428
Title:
NetworkManager does not set route to DHCP server, needed for lease
renewal, resulting in loss of lease when VPN active because default
route is via the VPN
Status in “network-manager” package in Ubuntu:
Incomplete
Bug description:
Current Lucid, amd64.
1) Suppose the DHCP server broadcasting to a subnet is not in that
subnet. The networking scripts (NetworkManager --> dhclient --> if-
up.d) set a subnet route and a default route.
2) A VPN connection is activated, setting a new default route.
3) original DHCP lease expires because the DHCP server cannot be
reached from the other end of the VPN.
The solution is something like this in the networking scripts:
[ "$DHCP4_DHCP_SERVER_IDENTIFIER" ] && [ "$LOGICAL" ] && ip route add
$DHCP4_DHCP_SERVER_IDENTIFIER dev $LOGICAL
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