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Bug #8444

closed

ovpnc as upstream dhcp relay interface

Added by Vladimir Lind about 6 years ago. Updated about 6 years ago.

Status:
Not a Bug
Priority:
Normal
Assignee:
Jim Pingle
Category:
DHCP Relay
Target version:
-
Start date:
04/07/2018
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
Release Notes:
Affected Version:
2.4.3
Affected Architecture:

Description

Not directly related to Bug 8443, but has something in common:

Following setup to pass DHCP relay requests via Openvpn:

DHCP client <---> LAN DHCP relay on pfsense <----> OpenVPN Tun <----> another pfsense as ovpn server <----> DHCP server (with settings fro remote client)

Ovpnc on system with dhcp relay is serving as relay upstream interface. DHCP discovers are passed from relay to remote DHCP server and DHCP offers come back to ovpnc interface. But they not appear on LAN where DHCP client is connected. PCAP of ovpnc interface is attached

Tried explicitly set ovpnc as upstream interface:

[2.4.3-RELEASE][]/root: /usr/local/sbin/dhcrelay -i vmx1 -iu ovpnc1 10.0.13.1
Requesting: vmx1 as upstream: Y downstream: Y
Requesting: ovpnc1 as upstream: Y downstream: N
...........
Unsupported device type 23 for "ovpnc1"

It looks like DHCP relay doesn't want to accept dhcp messages from ovpnc.

Files

packetcapture (5).cap (2.06 KB) packetcapture (5).cap Vladimir Lind, 04/07/2018 06:59 AM
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