T-Mobile Cable Internet

[srna]

@zajdeeDakujem za odpoved. Na WAN mam DHCPv6 s PD /56. Tu potom distribuujem na VLANy po /64.

(Plus pre porty s Windows mam povolenu len pouzivanu VLANu, pretoze Windows ignoruje .1q tag pre RA - to pisem len kvoli tomu, ze to je casty problem. Ale hlavny comp mam macOS, tam tento konkretny bug problem vobec nerobi.)

Zistil som potom, ze je lepsie pouzivat ICMP traceroute miesto UDP (ktory sa blokuje), takze budem pouzivat prave ten.

Smerom z LAN do internetu:

LAN -> dns.google ❌
-----------------
tomas@Tomas--MBP ~ % traceroute6 -I dns.google
traceroute6: Warning: dns.google has multiple addresses; using 2001:4860:4860::8844
traceroute6 to dns.google (2001:4860:4860::8844) from 2001:1aeb:7e80:3001:fc5d:57f8:5b89:d2c5, 64 hops max, 20 byte packets
 1  2001:xxxx:yyyy:zz01::1  1.553 ms  0.621 ms  0.364 ms
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
...

Potom som skusil pomocou 5G od O2, ktore ma skvelu implementaciu IPv6 (na iPhone Personal Hotspot pocitacu priradi dokonca adresu z /64) pingat WAN DHCPv6:

WAN IPv6 ✅
----------
tomas@Tomas--MacBook-Pro ~ % traceroute6 -I 2001:1aeb:xxxx:yyyy::2a8 
traceroute6 to 2001:1aeb:xxxx:yyyy::2a8 (2001:1aeb:80:22a::2a8) from 2a00:102a:5023:395f:b487:f550:40d4:bb7c, 64 hops max, 20 byte packets
 1  2a00:102a:5023:395f:158:3c08:460a:6525  5.293 ms  3.000 ms  2.978 ms
 2  * * *
 3  2001:41d8:1:4c03::1  54.628 ms  26.065 ms *
 4  dynamic-2a00-1028-7ffc-0046-0000-0000-0115-0047.ipv6.o2.cz  53.348 ms  32.865 ms  11.206 ms
 5  dynamic-2a00-1028-0001-00c2-0000-0000-0000-0083.ipv6.o2.cz  13.526 ms  37.603 ms  12.946 ms
 6  * * *
 7  dynamic-2a00-1028-7ffc-0115-0000-0000-0000-0035.ipv6.o2.cz  33.688 ms  11.569 ms  9.950 ms
 8  dynamic-2a00-1028-7ffc-0115-0000-0000-0000-0034.ipv6.o2.cz  12.194 ms * *
 9  nix4-ipv6.telekom.sk  18.160 ms  26.940 ms  13.404 ms
10  2001-1ae8-1-f--5005.ip6.tmcz.cz  15.477 ms  12.119 ms  14.884 ms
11  * * *
12  2001-1aeb--ffff-b9bc-b8a9.ip6.tmcz.cz  22.576 ms  13.231 ms  15.989 ms
13  * * *
14  2001-1aeb-xxxx-yyyy--2a8.ip6.tmcz.cz  68.934 ms  21.568 ms  20.994 ms

A potom priradenu adresu routra z prvej /64 z /56 PD

1st PD assigned IPv6 ❌
----------------------
tomas@Tomas--MacBook-Pro ~ % traceroute6 -I 2001:1aeb:xxxx:yy01::1
traceroute6 to 2001:1aeb:xxxx:yy01::1 (2001:1aeb:xxxx:yy01::1) from 2a00:102a:5023:395f:b487:f550:40d4:bb7c, 64 hops max, 20 byte packets
 1  2a00:102a:5023:395f:158:3c08:460a:6525  17.467 ms  3.026 ms  2.856 ms
 2  * * *
 3  * *
    2001:41d8:1:4c03::1  47.654 ms
 4  dynamic-2a00-1028-7ffc-0046-0000-0000-0115-0047.ipv6.o2.cz  16.213 ms  22.258 ms  15.855 ms
 5  dynamic-2a00-1028-0001-00c2-0000-0000-0000-0083.ipv6.o2.cz  15.372 ms  38.761 ms  19.899 ms
 6  * * *
 7  dynamic-2a00-1028-7ffc-0115-0000-0000-0000-0033.ipv6.o2.cz  26.480 ms  16.961 ms  23.080 ms
 8  * * *
 9  nix4-ipv6.telekom.sk  34.201 ms  14.118 ms  19.665 ms
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *

Z toho mi vyplyva, ze ISP nema routu nastavenu. Mozem volat infolinku? Alebo sa mylim a mam chybu v postupe?

(Btw. zaujimave, ze pouzivaju peering Slovak Telekomu)

[zajdee]

@srnaten peering je v dusledku ceskoslovenskeho t-mobilu. To je ok. Ale ze provoz neroutuji ani zevnitr ani zvenku spravne, to uz je na stiznost, infolinku volejte a poslete jim ty tracerouty zevnitr a zvenku.