It takes only a small configuration and can help you solve many network issues on your system. So the best solution is to disable Ipv6 entirely to get rid of those things. I noticed similar issues happen in other applications like Hexchat and also Google Chrome which would sometimes take longer than usual to lookup a domain name. connect (101: Network is unreachable) Įrrors like those have been more frequent in the recent Ubuntu versions, probably because they try to use Ipv6 more than before. Take a look at this output $ sudo apt-get updateĬannot initiate the connection to :80 (2001:67c:1360:8c01::1b). The apt-get command occasionally tries to connect to ipv6 addresses and fails and then retries an ipv4 address. I did come across some problems like that. Why ? It can cause issues like delayed domain lookups, un-necessary attempts to connect to ipv6 addresses causing delay in network connection etc. So if ipv6 is not supported on your network infrastructure, it might be useful to disable it all together. So setting them to 1 would disable ipv6 Disable ipv6 if its not supported Note that the variables control “disabling” of ipv6. The same can be also be checked from the proc files $ cat /proc/sys/net/ipv6/conf/all/disable_ipv6 The kernel parameters that enable ipv6 are as follows $ sysctl .disable_ipv6 There are lots of websites that test ipv6 support on your connection. Instead of checking every part of the network infrastructure, its better to just find out if you can connect to websites over ipv6. And beyond that, your ISP must also support ipv6. Next you need a router/modem that also supports ipv6. TX packets:45258 errors:0 dropped:0 overruns:0 carrier:0 RX packets:45258 errors:0 dropped:0 overruns:0 frame:0 TX packets:111960 errors:0 dropped:0 overruns:0 carrier:0 RX packets:110880 errors:0 dropped:0 overruns:0 frame:0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 If you take a look at the output of ifconfig you can see ipv6 addresses assigned to the network interfaces $ ifconfigĮth0 Link encap:Ethernet HWaddr 00:1c:c0:f8:79:ee Ubuntu Linux Mint and most modern distros do that. First of all you need a system/OS that supports IPv6. Does your system support ipv6 ?įor Ipv6 to work for you, there are many things needed. However it is not yet widely supported and its adoption is still in progress. Ipv6 allows for more addresses than what Ipv4 supports. Ipv6 is the next version of the addressing scheme Ipv4 that is currently being used to assign numerical address to domain names like over the internet.
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