# Not Working (IPv6) - Unable to retrieve PJSIP transport 'ipv6-udp'

**URL:** <https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491>\
**Category:** Asterisk SIP\
**Created:** [April 30, 2022, 12:00am UTC](https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491 "2022-04-30T00:00:27Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![kllarrod](https://avatars.discourse-cdn.com/v4/letter/k/73ab20/32.png) [@kllarrod](https://community.asterisk.org/u/kllarrod)\
**Post date:** [April 30, 2022, 12:00am UTC](https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491/1 "2022-04-30T00:00:27Z")

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The logs point to an error that I can’t resolve ☹

111260 [2022-04-29 23:55:32] ERROR[20182] res\_pjsip.c: Unable to retrieve PJSIP transport ‘ipv6-udp’   
111261 [2022-04-29 23:56:32] ERROR[20182] res\_pjsip.c: Unable to retrieve PJSIP transport ‘ipv6-udp’   
111262 [2022-04-29 23:57:32] ERROR[20182] res\_pjsip.c: Unable to retrieve PJSIP transport ‘ipv6-udp’

**pjsip.transports.conf:**

[0.0.0.0-udp]  
type=transport  
protocol=udp  
bind=0.0.0.0:5060  
allow\_reload=no  
tos=cs3  
cos=3  
local\_net=10.199.XX.XX/27

[transport-udp6]  
type=transport  
protocol=udp  
bind=[XXXX:XXXX:XX:XX01::4]:5060

[transport-tcp6]  
type=transport  
protocol=tcp  
bind=[XXXX:XXXX:XX:XX01::4]:5060

**pjsip.transports\_custom.conf**

[IPv6-udp]  
type=transport  
protocol=udp  
bind=[::]:5060

[IPv6-tcp]  
type=transport  
protocol=tcp  
bind=[::]:5060

**asterisk -rx"pjsip show transports"**

# Transport: \<TransportId…\> \<BindAddress…\>

Transport: 0.0.0.0-udp udp 3 96 0.0.0.0:5060  
Transport: IPv6-tcp tcp 0 0 [::]:5060  
Transport: IPv6-udp udp 0 0 [::]:5060

Objects found: 3

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<div class="post-metadata">

**Author:** ![EkFudrek](https://avatars.discourse-cdn.com/v4/letter/e/ce73a5/32.png) [@EkFudrek](https://community.asterisk.org/u/EkFudrek)\
**Post date:** [April 30, 2022, 6:05am UTC](https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491/2 "2022-04-30T06:05:26Z")

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It also looks as if this is a FreePBX system, so the FreePBX forum might be a better place for your question.

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**Author:** ![jcolp](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/jcolp/32/8848_2.png) [@jcolp](https://community.asterisk.org/u/jcolp)\
**Post date:** [April 30, 2022, 9:05am UTC](https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491/3 "2022-04-30T09:05:02Z")

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You’ve also named it “IPv6-udp” and not “ipv6-udp”.

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<div class="post-metadata">

**Author:** ![kllarrod](https://avatars.discourse-cdn.com/v4/letter/k/73ab20/32.png) [@kllarrod](https://community.asterisk.org/u/kllarrod)\
**Post date:** [April 30, 2022, 11:58am UTC](https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491/4 "2022-04-30T11:58:03Z")

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Thank you @jcolp !! 🤗  
That’s it.  
uppercase “IP”

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**Author:** ![system](https://global.discourse-cdn.com/asterisk/original/2X/4/475d0c889911cfb84ac4881ad6df8b523e3f9105.png) [@system](https://community.asterisk.org/u/system)\
**Post date:** [May 30, 2022, 11:58am UTC](https://community.asterisk.org/t/not-working-ipv6-unable-to-retrieve-pjsip-transport-ipv6-udp/92491/5 "2022-05-30T11:58:43Z")

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