Windows sometimes lets temporary IPv6 addresses expire without renewing
Hi! I'm experiencing an IPv6 issue with Windows that I wanted to ask if others are seeing, and get an idea of how widespread it might be. For background, I've been using a /64 tunnel from Hurricane for a few years to test IPv6 connectivity until my ISP offers native service. Linux works well with IPv6. However, I've isolated a problem in Windows 10 (version 1803, build 17134.345) where the Preferred Lifetime of *temporary* IPv6 addresses don't seem to be renewed properly sometimes. The Valid Life will start counting down again from 24 hours, but the Pref Life will stay at 0s; in this condition, the temporary addresses don't work on that interface until I disable and then re-enable it. Output of "netsh int ipv6 show addr", formatted to fit and for privacy: Addr Type DAD State Valid Life Pref. Life Address --------- ----------- ----------- ---------- ------- Public Preferred 23h58m22s 3h58m22s 2001:470:X:X:X:X:X:7a20 Temporary Deprecated 23h58m22s 0s 2001:470:X:X:bc72:8f4:7d98:3445 Public Preferred 23h58m22s 3h58m22s fd00:X::X:X:X:7a20 Temporary Deprecated 23h58m22s 0s fd00:X::bc72:8f4:7d98:3445 Other Preferred infinite infinite fe80::X:X:X:7a20%13 In this state, the Public addresses usually work, but these addresses don't change, so some privacy is lost. Occasionally, even the Public addresses stop working, (though the Valid and Pref Life values still have time left), which requires me to disable/enable the interface to regain any IPv6 connectivity to the internet. I've noticed some bug reports stating that the temporary address stops working after a while, but none I've found show the Pref Life staying on 0. Has anyone else seen this bug? Any idea whether there's a fix or workaround, other than an interface disable/re-enable? -- -Indy fireballiso@yahoo.com
On 11/11/2018 9:54 PM, fireballiso wrote:
Hi! I'm experiencing an IPv6 issue with Windows that I wanted to ask if others are seeing, and get an idea of how widespread it might be.
For background, I've been using a /64 tunnel from Hurricane for a few years to test IPv6 connectivity until my ISP offers native service.
Linux works well with IPv6. However, I've isolated a problem in Windows 10 (version 1803, build 17134.345) where the Preferred Lifetime of *temporary* IPv6 addresses don't seem to be renewed properly sometimes. The Valid Life will start counting down again from 24 hours, but the Pref Life will stay at 0s; in this condition, the temporary addresses don't work on that interface until I disable and then re-enable it.
Output of "netsh int ipv6 show addr", formatted to fit and for privacy:
Addr Type DAD State Valid Life Pref. Life Address --------- ----------- ----------- ---------- ------- Public Preferred 23h58m22s 3h58m22s 2001:470:X:X:X:X:X:7a20 Temporary Deprecated 23h58m22s 0s 2001:470:X:X:bc72:8f4:7d98:3445 Public Preferred 23h58m22s 3h58m22s fd00:X::X:X:X:7a20 Temporary Deprecated 23h58m22s 0s fd00:X::bc72:8f4:7d98:3445 Other Preferred infinite infinite fe80::X:X:X:7a20%13
In this state, the Public addresses usually work, but these addresses don't change, so some privacy is lost. Occasionally, even the Public addresses stop working, (though the Valid and Pref Life values still have time left), which requires me to disable/enable the interface to regain any IPv6 connectivity to the internet.
I've noticed some bug reports stating that the temporary address stops working after a while, but none I've found show the Pref Life staying on 0.
Has anyone else seen this bug? Any idea whether there's a fix or workaround, other than an interface disable/re-enable? -- -Indy fireballiso@yahoo.com
To clarify: when I say "renew", I really mean "countdown reset to 4 hours again, and a new temporary IPv6 address assigned to allow continued connectivity with a temporary address". Sorry for the vague language. -- -Indy fireballiso@yahoo.com
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