Hi list,
I 'm trying to emerge net-analyzer/tcpdump-4.6.2, to debug some ICMPv6
problem I recently encountered. So, I type:
Riaqn-Laptop ~ # emerge -av tcpdump
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild N ] sys-libs/libcap-ng-0.7.4 USE="-python -static-libs"
PYTHON_TARGETS="python2_7 python3_3 -python3_4" 0 KiB
[ebuild N ] net-analyzer/tcpdump-4.6.2 USE="drop-root ipv6 ssl -samba
-smi -suid {-test}" 0 KiB
Total: 2 packages (2 new), Size of downloads: 0 KiB
Would you like to merge these packages? [Yes/No] yes
>>> Verifying ebuild manifests
>>> Emerging (1 of 2) sys-libs/libcap-ng-0.7.4::gentoo
* libcap-ng-0.7.4.tar.gz SHA256 SHA512 WHIRLPOOL size ;-) ...
[ ok ]
>>> Unpacking source...
>>> Unpacking libcap-ng-0.7.4.tar.gz to
>>> /var/tmp/portage/sys-libs/libcap-ng-0.7.4/work
>>> Source unpacked in /var/tmp/portage/sys-libs/libcap-ng-0.7.4/work
>>> Preparing source in
>>> /var/tmp/portage/sys-libs/libcap-ng-0.7.4/work/libcap-ng-0.7.4 ...
* ACCESS DENIED: open_wr: /proc/sys/net/ipv6/conf/enp4s0/autoconf
* ACCESS DENIED: open_wr: /proc/sys/net/ipv6/conf/enp4s0/accept_ra
* Running eautoreconf in
'/var/tmp/portage/sys-libs/libcap-ng-0.7.4/work/libcap-ng-0.7.4' ...
* Running libtoolize --install --copy --force --automake ...
* ACCESS DENIED: open_wr: /proc/sys/net/ipv6/conf/enp4s0/autoconf
* ACCESS DENIED: open_wr: /proc/sys/net/ipv6/conf/enp4s0/accept_ra
[ ok ]
Riaqn-Laptop ~ # cat
/var/tmp/portage/sys-libs/libcap-ng-0.7.4/temp/autoconf.out
***** autoconf *****
***** PWD: /var/tmp/portage/sys-libs/libcap-ng-0.7.4/work/libcap-ng-0.7.4
***** autoconf
sysctl: permission denied on key 'net.ipv6.conf.enp4s0.autoconf'
sysctl: permission denied on key 'net.ipv6.conf.enp4s0.accept_ra'
However, the permission looks quite right, I(root) can even write to it:
Riaqn-Laptop ~ # ls -l /proc/sys/net/ipv6/conf/enp4s0/autoconf
-rw-r--r-- 1 root root 0 12月 9 22:58 /proc/sys/net/ipv6/conf/enp4s0/autoconf
Even if I emerge with FEATURES="-userpriv" doesn't help, same output.
I don't know if it's related, but as far as I noticed, dhcpcd will set
these two values to 0, to disable the kernel configuring the IPv6
address.(I checked dhcpcd source)
Any comment is appreciated!
Regards,
--
Zesen Qian (钱泽森)
