Re: kern/57037: unncessary and unwarranted RTM_NEWADDR for IPv6 routing messages

[Frank Kardel <kardel%netbsd.org@localhost>]

The following reply was made to PR kern/57037; it has been noted by GNATS.

From: Frank Kardel <kardel%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/57037: unncessary and unwarranted RTM_NEWADDR for IPv6
 routing messages
Date: Fri, 30 Sep 2022 16:57:39 +0200

 Looking at route.h we have:
 
 #define RTM_NEWADDR     0x16    /* address being added to iface */
 #define RTM_DELADDR     0x17    /* address being removed from iface */
 #define RTM_CHGADDR     0x18    /* address properties changed */
 
 Wouldn't RTM_CHGADDR be more appropriate for address parameter updates 
 when new new address is being added?
 
 Frank
 
 
 On 09/30/22 13:35, Joerg Sonnenberger wrote:
 > The following reply was made to PR kern/57037; it has been noted by GNATS.
 >
 > From: Joerg Sonnenberger <joerg%bec.de@localhost>
 > To: gnats-bugs%netbsd.org@localhost
 > Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 > 	netbsd-bugs%netbsd.org@localhost
 > Subject: Re: kern/57037: unncessary and unwarranted RTM_NEWADDR for IPv6
 >   routing messages
 > Date: Fri, 30 Sep 2022 13:31:42 +0200
 >
 >   Am Fri, Sep 30, 2022 at 09:25:01AM +0000 schrieb kardel%netbsd.org@localhost:
 >   > >How-To-Repeat:
 >   > 	let NetBSD autoconfigure IPv6 and watch "route monitor".
 >   >
 >   > RTM_NEWADDR: address being added to iface: len 120, pid 1709, metric 0, addrflags: 0x40<AUTOCONF>
 >   > sockaddrs: 0x34<NETMASK,IFP,IFA>
 >   >  ffff:ffff:ffff:ffff:: aa:00:00:00:00:01 xxxx:yyyy:zzzz:rrrr:ssss:tttt:uuuu:vvvv
 >   > got message of size 112 on Fri Sep 30 08:24:57 2022
 >   > #12: len 112, got message of size 120 on Fri Sep 30 08:24:57 2022
 >   > RTM_NEWADDR: address being added to iface: len 120, pid 1709, metric 0, addrflags: 0x40<AUTOCONF>
 >   > sockaddrs: 0x34<NETMASK,IFP,IFA>
 >   >  ffff:ffff:ffff:ffff:: aa:00:00:00:00:01 xxxx:yyyy:zzzz:rrrr:ssss:tttt:uuuu:vvvv
 >   > got message of size 112 on Fri Sep 30 08:26:58 2022
 >   
 >   So what is the life time of the addresses? Are you sure your network
 >   isn't forcing a renewal every minute?
 >   
 >   Joerg
 >