Re: sh /etc/netstart interface counter intuitive behaviour with multiple inet aliases 6.4 and 6.3

On 06/12/18(Thu) 22:49, Tom Smyth wrote:
> Hello,
>
> Im running a router with multiple ips on an interface using the
> inet alias
>
> issue:
> when commenting out configured aliases on hostname.if
> after running sh /etc/netstart vio4
>
> if you run ifconfig vio4 after the restart of the interface
> the old aliases that were commented still appear in ifconfig output ahead
> of the first ip address configured in the /etc/hostname.vio4 file.
>
> ifconfig before commenting out 10.134.91.253 in hostname.vio4
> is listed below
> vio4: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> lladdr 16:2c:a4:f2:b4:e3
> index 5 priority 0 llprio 3
> media: Ethernet autoselect
> status: active
> inet 10.94.0.1 netmask 0xffff0000 broadcast 10.94.255.255
> inet 10.134.91.65 netmask 0xfffffffc broadcast 10.134.91.67
> inet 10.134.91.69 netmask 0xfffffffc broadcast 10.134.91.71
> inet 10.134.91.73 netmask 0xfffffffc broadcast 10.134.91.75
> inet 10.134.91.85 netmask 0xfffffffc broadcast 10.134.91.87
> inet 10.134.91.89 netmask 0xfffffffc broadcast 10.134.91.91
> inet 10.134.91.93 netmask 0xfffffffc broadcast 10.134.91.95
> inet 10.134.91.161 netmask 0xfffffffc broadcast 10.134.91.163
> inet 10.134.91.165 netmask 0xfffffffc broadcast 10.134.91.167
> inet 10.134.91.169 netmask 0xfffffffc broadcast 10.134.91.171
> inet 10.134.91.173 netmask 0xfffffffc broadcast 10.134.91.175
> inet 10.134.91.193 netmask 0xfffffffc broadcast 10.134.91.195
> inet 10.134.91.197 netmask 0xfffffffc broadcast 10.134.91.199
> inet 10.134.91.201 netmask 0xfffffffc broadcast 10.134.91.203
> inet 10.134.91.205 netmask 0xfffffffc broadcast 10.134.91.207
> inet 10.134.91.209 netmask 0xfffffffc broadcast 10.134.91.211
> inet 10.134.91.213 netmask 0xfffffffc broadcast 10.134.91.215
> inet 10.134.91.217 netmask 0xfffffffc broadcast 10.134.91.219
> inet 10.134.91.221 netmask 0xfffffffc broadcast 10.134.91.223
> inet 10.134.91.225 netmask 0xfffffffc broadcast 10.134.91.227
> inet 10.134.91.229 netmask 0xfffffffc broadcast 10.134.91.231
> inet 10.134.91.233 netmask 0xfffffffc broadcast 10.134.91.235
> inet 10.134.91.237 netmask 0xfffffffc broadcast 10.134.91.239
> inet 10.134.91.241 netmask 0xfffffffc broadcast 10.134.91.243
> inet 10.134.91.245 netmask 0xfffffffc broadcast 10.134.91.247
> inet 10.134.91.249 netmask 0xfffffffc broadcast 10.134.91.251
> inet 10.134.91.253 netmask 0xfffffffc broadcast 10.134.91.255
> --------------------------------------------------------------------------------------------
>
> after commenting out the last 2 inet aliases , and running sh /etc/netstart vio4
>
> the ifconfig output is as follows (i have highlighted with *** the addresses
> which I think should have been removed
>
> vio4: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> lladdr 16:2c:a4:f2:b4:e3
> index 5 priority 0 llprio 3
> media: Ethernet autoselect
> status: active
> ** inet 10.134.91.249 netmask 0xfffffffc broadcast 10.134.91.251****
> ** inet 10.134.91.253 netmask 0xfffffffc broadcast 10.134.91.255****
> inet 10.94.0.1 netmask 0xffff0000 broadcast 10.94.255.255
> inet 10.134.91.65 netmask 0xfffffffc broadcast 10.134.91.67
> inet 10.134.91.69 netmask 0xfffffffc broadcast 10.134.91.71
> inet 10.134.91.73 netmask 0xfffffffc broadcast 10.134.91.75
> inet 10.134.91.85 netmask 0xfffffffc broadcast 10.134.91.87
> inet 10.134.91.89 netmask 0xfffffffc broadcast 10.134.91.91
> inet 10.134.91.93 netmask 0xfffffffc broadcast 10.134.91.95
> inet 10.134.91.161 netmask 0xfffffffc broadcast 10.134.91.163
> inet 10.134.91.165 netmask 0xfffffffc broadcast 10.134.91.167
> inet 10.134.91.169 netmask 0xfffffffc broadcast 10.134.91.171
> inet 10.134.91.173 netmask 0xfffffffc broadcast 10.134.91.175
> inet 10.134.91.193 netmask 0xfffffffc broadcast 10.134.91.195
> inet 10.134.91.197 netmask 0xfffffffc broadcast 10.134.91.199
> inet 10.134.91.201 netmask 0xfffffffc broadcast 10.134.91.203
> inet 10.134.91.205 netmask 0xfffffffc broadcast 10.134.91.207
> inet 10.134.91.209 netmask 0xfffffffc broadcast 10.134.91.211
> inet 10.134.91.213 netmask 0xfffffffc broadcast 10.134.91.215
> inet 10.134.91.217 netmask 0xfffffffc broadcast 10.134.91.219
> inet 10.134.91.221 netmask 0xfffffffc broadcast 10.134.91.223
> inet 10.134.91.225 netmask 0xfffffffc broadcast 10.134.91.227
> inet 10.134.91.229 netmask 0xfffffffc broadcast 10.134.91.231
> inet 10.134.91.233 netmask 0xfffffffc broadcast 10.134.91.235
> inet 10.134.91.237 netmask 0xfffffffc broadcast 10.134.91.239
> inet 10.134.91.241 netmask 0xfffffffc broadcast 10.134.91.243
> inet 10.134.91.245 netmask 0xfffffffc broadcast 10.134.91.247
>
> This behaviour is counter intuitive as it is different to sh /etc/netstart
> behaviour on the configuration of inet addresses
> im wondiring is this a feature or a bug ... or me misunderstanding the
> use of netstart script to reset / reload the configuration of an interface

It's a known behavior of how alias are implemented. I agree it is
confusing.