LInux kernel 3.0 sit creation bug report

LInux kernel 3.0 sit creation bug report

[Jay Rouman]

Kernel 3.0 (release version)
Summary:  sit tunnel creation fails with "No buffer space available"

Example:

icebox:/home/u/jsr(3)# /sbin/ip tunnel add sit0 mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
add tunnel sit0 failed: No buffer space available

icebox:/home/u/jsr(8)# /sbin/ifconfig sit0 inet6 tunnel ::209.51.18.1
SIOCSIFDSTADDR: No buffer space available

Notes:

Oddly, the ifconfig example creates a working sit0.  The "ip" example
does not.  The problem existed in rc1 but unfortunately I did not test
sit creation then.  This was discovered when I upgraded a machine with
an HE tunnel to the 3.0 kernel.  I am happy to do further testing or
provide whatever additional info I can.

Environment:

icebox:/home/u/jsr(12)# cat /etc/slackware-version
Slackware 13.37.0

icebox:/home/u/jsr(11)# /usr/src/linux/scripts/ver_linux
Linux icebox 3.0.0 #1 SMP Fri Jul 22 08:07:55 EDT 2011 i686 AMD Duron(tm) processor AuthenticAMD GNU/Linux

Gnu C                  4.5.2
Gnu make               3.82
binutils               2.21.51.0.6.20110118
util-linux             2.19
mount                  support
module-init-tools      3.12
e2fsprogs              1.41.14
jfsutils               1.1.15
reiserfsprogs          3.6.21
xfsprogs               3.1.4
pcmciautils            017
quota-tools            3.17.
PPP                    2.4.5
Linux C Library        2.13
Dynamic linker (ldd)   2.13
Linux C++ Library      6.0.14
Procps                 3.2.8
Net-tools              1.60
Kbd                    1.15.2
oprofile               0.9.6
Sh-utils               8.11

icebox:/home/u/jsr(14)# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 8
model name      : AMD Duron(tm) processor
stepping        : 1
cpu MHz         : 1797.443
cache size      : 64 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow up
bogomips        : 3594.88
clflush size    : 32
cache_alignment : 32
address sizes   : 34 bits physical, 32 bits virtual
power management: ts
-- 
Jay Rouman (jsr@dexter.mi.org jsr@edzone.net)

Re: LInux kernel 3.0 sit creation bug report

[Eric Dumazet]

Le samedi 23 juillet 2011 à 12:27 -0400, Jay Rouman a écrit :
> Kernel 3.0 (release version)
> Summary:  sit tunnel creation fails with "No buffer space available"
> 
> Example:
> 
> icebox:/home/u/jsr(3)# /sbin/ip tunnel add sit0 mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
> add tunnel sit0 failed: No buffer space available
> 
> icebox:/home/u/jsr(8)# /sbin/ifconfig sit0 inet6 tunnel ::209.51.18.1
> SIOCSIFDSTADDR: No buffer space available
> 
> Notes:
> 
> Oddly, the ifconfig example creates a working sit0.  The "ip" example
> does not.  The problem existed in rc1 but unfortunately I did not test
> sit creation then.  This was discovered when I upgraded a machine with
> an HE tunnel to the 3.0 kernel.  I am happy to do further testing or
> provide whatever additional info I can.
> 

I believe you use a deprecated (~10 years ago ?) way to setup your
tunnel, its not a linux-3.0 new behavior.

sit0 is reserved (fall back tunnel), you should use a different name.

Try :

# ip tunnel add aster mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
# ifconfig aster up

# ip tunnel
sit0: ipv6/ip  remote any  local any  ttl 64  nopmtudisc
aster: ipv6/ip  remote 209.51.18.1  local 216.111.203.89  ttl 255 

Re: LInux kernel 3.0 sit creation bug report

[Jay Rouman]

Thank you for the reply.  I was not aware that sit0 was deprecated,
but something has changed in 3.0.  The "SIOCSIFDSTADDR: No buffer
space available" error does not happen in 2.6.39.  The Linux-net-tools
command creates a working tunnel to Hurricane Electric's tunnel broker,
even though the error message is generated.  I have tried the route-2
commands and while they work without error, I can't get the tunnel to
function.  I get I never tried the route-2 (/bin/ip) setup in 2.6.39.
--
Jay Rouman (jsr@dexter.mi.org jsr@edzone.net)


/sbin/ifconfig sit0 inet6 tunnel ::<ip address>
> Le samedi 23 juillet 2011 ? 12:27 -0400, Jay Rouman a ?crit :
> > Kernel 3.0 (release version)
> > Summary:  sit tunnel creation fails with "No buffer space available"
> > 
> > Example:
> > 
> > icebox:/home/u/jsr(3)# /sbin/ip tunnel add sit0 mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
> > add tunnel sit0 failed: No buffer space available
> > 
> > icebox:/home/u/jsr(8)# /sbin/ifconfig sit0 inet6 tunnel ::209.51.18.1
> > SIOCSIFDSTADDR: No buffer space available
> > 
> > Notes:
> > 
> > Oddly, the ifconfig example creates a working sit0.  The "ip" example
> > does not.  The problem existed in rc1 but unfortunately I did not test
> > sit creation then.  This was discovered when I upgraded a machine with
> > an HE tunnel to the 3.0 kernel.  I am happy to do further testing or
> > provide whatever additional info I can.
> > 
> 
> I believe you use a deprecated (~10 years ago ?) way to setup your
> tunnel, its not a linux-3.0 new behavior.
> 
> sit0 is reserved (fall back tunnel), you should use a different name.
> 
> Try :
> 
> # ip tunnel add aster mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
> # ifconfig aster up
> 
> # ip tunnel
> sit0: ipv6/ip  remote any  local any  ttl 64  nopmtudisc
> aster: ipv6/ip  remote 209.51.18.1  local 216.111.203.89  ttl 255 

Re: LInux kernel 3.0 sit creation bug report

[Jay Rouman]

I got the route2 configuration to work.  Sorry for the bother.  There
does seem to be a change in behavior as noted between 2.6.39 and 3.0
when using ifconfig and sit0.  Perhaps this was intended.

--Jay Rouman

> Le samedi 23 juillet 2011 ? 12:27 -0400, Jay Rouman a ?crit :
> > Kernel 3.0 (release version)
> > Summary:  sit tunnel creation fails with "No buffer space available"
> > 
> > Example:
> > 
> > icebox:/home/u/jsr(3)# /sbin/ip tunnel add sit0 mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
> > add tunnel sit0 failed: No buffer space available
> > 
> > icebox:/home/u/jsr(8)# /sbin/ifconfig sit0 inet6 tunnel ::209.51.18.1
> > SIOCSIFDSTADDR: No buffer space available
> > 
> > Notes:
> > 
> > Oddly, the ifconfig example creates a working sit0.  The "ip" example
> > does not.  The problem existed in rc1 but unfortunately I did not test
> > sit creation then.  This was discovered when I upgraded a machine with
> > an HE tunnel to the 3.0 kernel.  I am happy to do further testing or
> > provide whatever additional info I can.
> > 
> 
> I believe you use a deprecated (~10 years ago ?) way to setup your
> tunnel, its not a linux-3.0 new behavior.
> 
> sit0 is reserved (fall back tunnel), you should use a different name.
> 
> Try :
> 
> # ip tunnel add aster mode sit local 216.111.203.89 remote 209.51.18.1 ttl 255
> # ifconfig aster up
> 
> # ip tunnel
> sit0: ipv6/ip  remote any  local any  ttl 64  nopmtudisc
> aster: ipv6/ip  remote 209.51.18.1  local 216.111.203.89  ttl 255