Customer was adding a new VLAN with an IRB & VGA, noticed the errors in symptoms.

Oct 7 08:44:13 JTAC-fpc0 evo-aftmand-bt[17761]: [t:17761] [Error] RT : Mac Route install failed for rtt table index:56 Mac:0x5e000199 BD:56 ifl:4294967295 error:Generic failure

Oct 7 08:44:13 JTAC-fpc1 evo-aftmand-bt[17728]: [t:17728] [Error] RT : Mac Route install failed for rtt table index:56 Mac:0x5e000199 BD:56 ifl:4294967295 error:Generic failure

The logs were generated due to the commit of the new vlan/irb & matching the commit.

This indeed is matching PR1810348 & this is specific to all PTX-EVO devices.

As per engineering, this logs might be seen when a mac is learned on l2-ifl & the same mac becomes vrrp/vga/irb mfilter-mac or vice-versa.

This PR fixes L2alm Evo side code changes) & need fix for below PR as well.

1529655 (two parts: PFE infra changes and other PFE software changes).

As per release notes on PR, "On all Junos and Junos OS Evolved platforms specifically PTX-EVO platforms and MX AFT linecards we observe the Mac Route install Failed error.".

This error being a generic failure, there are no functional impact.

Currently, this is fixed in 24.4R1-EVO & all future releases after this will have the fix.