pfSense flushes default route when second gateway is starting

stephenw10

What pfSense version is this?

Yves_

@stephenw10 22.05-RELEASE

stephenw10

Hmm, I think I see what might have happened. Though I can't replicate. Yet.

Download the config file and look to see what's in the <gateways> section.

stephenw10

Oh actually it's probably this: https://redmine.pfsense.org/issues/12922

Did you check the routing log? Does it show those routes being passed?

stephenw10

Hmm, though that would only happen if it was actually seeing a dhcp response and the 60s delay implies it is not....

Yves_

@stephenw10

	<gateways>
		<defaultgw4>UPCCABLECOM_DHCP</defaultgw4>
		<defaultgw6>-</defaultgw6>
		<gateway_item>
			<interface>wan</interface>
			<gateway>dynamic</gateway>
			<name>UPCCABLECOM_DHCP</name>
			<weight>1</weight>
			<ipprotocol>inet</ipprotocol>
			<descr><![CDATA[UPC Business Uplink]]></descr>
			<data_payload>0</data_payload>
			<latencylow>100</latencylow>
			<latencyhigh>250</latencyhigh>
			<losslow>5</losslow>
			<losshigh>10</losshigh>
		</gateway_item>
		<gateway_item>
			<interface>opt3</interface>
			<gateway>dynamic</gateway>
			<name>STARLINK_DHCP</name>
			<weight>1</weight>
			<ipprotocol>inet</ipprotocol>
			<descr><![CDATA[Starlink Uplink]]></descr>
		</gateway_item>
		<gateway_group>
			<name>UPC_Preferred</name>
			<item>UPCCABLECOM_DHCP|1|address</item>
			<item>STARLINK_DHCP|2|address</item>
			<trigger>downlosslatency</trigger>
			<descr><![CDATA[Failover between UPC Business and Starlink]]></descr>
		</gateway_group>
		<gateway_group>
			<name>Starlink_Preferred</name>
			<item>UPCCABLECOM_DHCP|2|address</item>
			<item>STARLINK_DHCP|1|address</item>
			<trigger>downlosslatency</trigger>
			<descr><![CDATA[Failover between Starlink and UPC Business]]></descr>
		</gateway_group>
	</gateways>

Yves_

@stephenw10
My routing log looks quite boring....

stephenw10

@yves_ said in pfSense flushes default route when second gateway is starting:

<defaultgw6>-</defaultgw6>

That looks a bit odd. But apart from that it's almost exactly what I was testing and still haven't managed to replicate it.
Do you have any IPv6 config on either of those WANs?

Steve

Yves_

@stephenw10 I guess thats because I don't have an IPv6 gateway configured. Since I don't need it so far...

Might it be because of this dhcp lease stuff described in the problem you posted above?

stephenw10

That seemed likely since it's specific to starlink but you would see something in the routing log. And it has to actually receive a new dhcp lease to get that and your issue looks to be during the timeout where it's failing to pull a lease.

So you have no IPv6 configured on any interface? They are all set as 'none'?