[snmp|agent] Handling of socket (monitor) DOWN message
[snmp|agent] Handling of socket (monitor) DOWN message

The net-if process incorrectly expected the 'type' of
the DOWN message to be 'socket'. But the old style sockets
is of type 'port'.

OTP-17641

dgud/otp,mikpe/otp,vinoski/otp,dgud/otp,isvilen/otp,getong/otp,isvilen/otp,jj1bdx/otp,dumbbell/otp,emacsmirror/erlang,mikpe/otp,potatosalad/otp,jj1bdx/otp,rlipscombe/otp,dumbbell/otp,getong/otp,jj1bdx/otp,bjorng/otp,dgud/otp,dumbbell/otp,g-andrade/otp,mikpe/otp,emacsmirror/erlang,potatosalad/otp,emacsmirror/erlang,potatosalad/otp,getong/otp,isvilen/otp,rlipscombe/otp,dgud/otp,getong/otp,potatosalad/otp,bjorng/otp,mikpe/otp,getong/otp,vinoski/otp,dgud/otp,dumbbell/otp,rlipscombe/otp,dgud/otp,dumbbell/otp,getong/otp,jj1bdx/otp,potatosalad/otp,erlang/otp,potatosalad/otp,dgud/otp,getong/otp,jj1bdx/otp,vinoski/otp,mikpe/otp,potatosalad/otp,bjorng/otp,dumbbell/otp,erlang/otp,bjorng/otp,dumbbell/otp,bjorng/otp,g-andrade/otp,rlipscombe/otp,g-andrade/otp,potatosalad/otp,isvilen/otp,erlang/otp,rlipscombe/otp,mikpe/otp,jj1bdx/otp,dgud/otp,bjorng/otp,isvilen/otp,vinoski/otp,g-andrade/otp,bjorng/otp,mikpe/otp,vinoski/otp,isvilen/otp,dgud/otp,potatosalad/otp,erlang/otp,dgud/otp,isvilen/otp,emacsmirror/erlang,erlang/otp,vinoski/otp,isvilen/otp,rlipscombe/otp,jj1bdx/otp,jj1bdx/otp,bjorng/otp,rlipscombe/otp,mikpe/otp,rlipscombe/otp,emacsmirror/erlang,erlang/otp,erlang/otp,getong/otp,erlang/otp,emacsmirror/erlang,vinoski/otp,bjorng/otp,mikpe/otp,rlipscombe/otp,getong/otp,g-andrade/otp,g-andrade/otp,rlipscombe/otp,erlang/otp,g-andrade/otp,bjorng/otp,vinoski/otp,mikpe/otp,jj1bdx/otp,g-andrade/otp,getong/otp,g-andrade/otp,emacsmirror/erlang,vinoski/otp,erlang/otp,dumbbell/otp,emacsmirror/erlang,vinoski/otp,jj1bdx/otp,isvilen/otp,isvilen/otp,potatosalad/otp,g-andrade/otp,emacsmirror/erlang,dumbbell/otp,dumbbell/otp,emacsmirror/erlang