New VU+ Zero No Telnet Access

[chuf]

Hi All

Strange one this

New box loaded with 4.2.06

All my other boxes no issue connecting with E2 this box just wont play, login incorrect, user name root: password:blank

Also tried telnet and ssh still the same problem.

Defaulted box still the same problem?

Any ideas?

Thanks

Chuf

[abu baniaz]

What program are you using?

[chuf]

Hi
Tried putty, telnet from windows and also DCC

[chuf]

FYI
can connect fine with ftp, just telnet.......

[chuf]

Any ideas??

heres my telent output when I try to connect

Welcome to OpenViX for vuzero
openvix 4.2 vuzero

vuzero login: root
Password:
Last login: Wed Oct 19 10:19:23 IST 2016 on pts/0
login: res_query.c:262: __libc_res_nquery: Assertion `(hp != NULL) && (hp2 != NU
LL)' failed.

[birdman]

Any ideas??

heres my telent output when I try to connect

Welcome to OpenViX for vuzero
openvix 4.2 vuzero

vuzero login: root
Password:
Last login: Wed Oct 19 10:19:23 IST 2016 on pts/0
login: res_query.c:262: __libc_res_nquery: Assertion `(hp != NULL) && (hp2 != NU
LL)' failed.

Something is doing a (reverse?) DNS lookup (although I'm not sure why). Do you have DNS servers configured correctly on the system?

[birdman]

Here's a (probable) bug report about this :

https://sourceware.org/bugzilla/show_bug.cgi?id=19791

So, have you set up a valid address for a DNS name resolver?

[chuf]

Hi All
tried connecting with putty/DCC/and dos cmd all the same result.
DNS set to BB provider same as my duo2, also tried setting dns to router 192.168.1.1 and 8.8.8.8

[DaMacFunkin]

Just a quick ask, is box connected via Wi-Fi?
Have you connected to your Modem/router instead of your router?
Just a thought.

[chuf]

Just a quick ask, is box connected via Wi-Fi?
Have you connected to your Modem/router instead of your router?
Just a thought.

Hi
Zero is connected directly into vdsl router via lan cable, fyi my solo and duo have no problems.........
Thanks
Chuf

[chuf]

Okay peeps took the leap and added this into the config....

added the following to /etc/sysctl.conf and do
net.ipv6.conf.all.disable_ipv6 = 1sysctl -p
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

make sure that dns has an ipv6 entry. in my test, ipv6 was the first entry

Okay first problem how do I do this command sysctl -p
Second issue
make sure that dns has an ipv6 entry Where do I add this entry?

Third the box is still working atm.......

Any ideas?

Chufski

Over & Out

[birdman]

added the following to /etc/sysctl.conf and do
net.ipv6.conf.all.disable_ipv6 = 1sysctl -p
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

There's stray "sysctl -p" text at the end of the first item.

Okay first problem how do I do this command sysctl -p

You just run it on the command line once you login - but as I read that I see the chicken-and-egg problem...
Although if you've got the text into the file a reboot will also do it (the file gets loaded at boot time).

[chuf]

There's stray "sysctl -p" text at the end of the first item.


You just run it on the command line once you login - but as I read that I see the chicken-and-egg problem...
Although if you've got the text into the file a reboot will also do it (the file gets loaded at boot time).

Okies ive rebooted the zero but no difference does it matter where I put the new lines?

this is how it looks at the moment......
# Uncomment the next two lines to enable Spoof protection (reverse-path filter)
# Turn on Source Address Verification in all interfaces to
# prevent some spoofing attacks
net.ipv4.conf.default.rp_filter=1
net.ipv4.conf.all.rp_filter=1
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
Thanks
Chuf

Ive also noticed this as well any ideas if I have to add this line if so where do I add it?
Applying the fix to include *answerp2 as well in the check at line 248 seems to fix the issue.
if (answerp2 == NULL || *answerp2 == NULL || *resplen2 < (int) sizeof (HEADER))

[chuf]

I also found this so removed but no difference......
/etc/resolv.conf
nameserver 2001:4860:4860::8888
nameserver 2001:4860:4860::8844

and left my default dns in there

[birdman]

Okies ive rebooted the zero but no difference does it matter where I put the new lines?

It matters that the file is a Unix text file, not a DOS one.

this is how it looks at the moment......
# Uncomment the next two lines to enable Spoof protection (reverse-path filter)
# Turn on Source Address Verification in all interfaces to
# prevent some spoofing attacks
net.ipv4.conf.default.rp_filter=1
net.ipv4.conf.all.rp_filter=1
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

Did you add these to what was already there, or is that now the entire content of the file?

Ive also noticed this as well any ideas if I have to add this line if so where do I add it?
Applying the fix to include *answerp2 as well in the check at line 248 seems to fix the issue.
if (answerp2 == NULL || *answerp2 == NULL || *resplen2 < (int) sizeof (HEADER))

That's a change to the resolver code in glibc, so you can't do anything with it.

I also found this so removed but no difference......
/etc/resolv.conf
nameserver 2001:4860:4860::8888
nameserver 2001:4860:4860::8844

and left my default dns in there

That's using ipv6 for Google's DNS servers...how did that get set? Do you actually use ipv6 on your network?