jimc@math.ucla.edu (Jim Carter) (10/08/90)
We have SunOS v3.5.2 on a 3/280 with two Ethernet interfaces. /etc/rc.boot contains (in this order): /etc/ifconfig ie0 $hostid0 -trailers up netmask 0xffffff00 \ broadcast 128.97.4.255 /etc/ifconfig ie1 $hostid1 -trailers up netmask 0xfffffe00 The net that ie1 is on has 512 addresses, hence the netmask of fffffe00. That part works fine. However, /etc/ifconfig reveals that the netmask of ie0 has also been set to 0xfffffe00, causing the machine to miss broadcast packets from that side. Does anyone know if SunOS v4 has the same bug? Does anyone know why it happens? I can think of several solutions (such as giving up the RFC919 broadcast address, or changing 128.97.4.* to 128.97.5.*), but does anyone have a solution that really solves the problem? Please mail responses as our news machine has a real short expiration time. James F. Carter (213) 825-2897 UCLA-Mathnet; 6221 MSA; 405 Hilgard Ave.; Los Angeles, CA, USA 90024-1555 Internet: jimc@math.ucla.edu BITNET: jimc%math.ucla.edu@INTERBIT UUCP:...!{ucsd,ames,ncar,gatech,purdue,rutgers,decvax,uunet}!math.ucla.edu!jimc