The interfaces aliases returned when using `snmpwalk` and other tools don't show the interface description as alias.
This is an example of snmpwalk output:
```
iso.3.6.1.2.1.2.2.1.2.1 = STRING: "lo"
iso.3.6.1.2.1.2.2.1.2.2 = STRING: "Red Hat, Inc Device 0001"
iso.3.6.1.2.1.2.2.1.2.3 = STRING: "Red Hat, Inc Device 0001"
iso.3.6.1.2.1.2.2.1.2.4 = STRING: "Red Hat, Inc Device 0001"
iso.3.6.1.2.1.2.2.1.2.5 = STRING: "Red Hat, Inc Device 0001"
iso.3.6.1.2.1.2.2.1.2.6 = STRING: "gre0"
iso.3.6.1.2.1.2.2.1.2.7 = STRING: "gretap0"
iso.3.6.1.2.1.2.2.1.2.8 = STRING: "erspan0"
iso.3.6.1.2.1.2.2.1.2.9 = STRING: "tun2"
iso.3.6.1.2.1.2.2.1.2.10 = STRING: "sit0"
iso.3.6.1.2.1.2.2.1.2.11 = STRING: "tun1"
iso.3.6.1.2.1.2.2.1.2.12 = STRING: "tun0"
```
Here I see `Red Hat, Inc Device 0001` instead of `Servers Rotterdam` for `iso.3.6.1.2.1.2.2.1.2.3`.
When running `/opt/vyatta/sbin/if-mib-alias` from the router it does return the correct name:
```
iso.3.6.1.2.1.2.2.1.2.3
string
Servers Rotterdam
```
The interface itself also has the correct alias:
```
root@r1-alb:~# cat /sys/class/net/eth1/ifalias
Servers Rotterdam
```
The snmpd config has the following in it, which appears to be correct
```
pass .1.3.6.1.2.1.31.1.1.1.18 /opt/vyatta/sbin/if-mib-alias
```
Not sure what is going on here as this appears to have been fixed in T719