One of my nodes using `onlynet=tor` nodes is completely broken with current master as of 97a35f3ae5bff7f4a25d37d8961191fdbc8c5b67.

Tor is manually configured. Relevant `bitcoin.conf`:
```
onlynet=onion
proxy=127.0.0.1:9050
onion=127.0.0.1:9050
```

It does not manage to make any outgoing connections. The log has an endless stream of:
```
2021-03-03T13:42:13Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:13Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:14Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:14Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:15Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:15Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:16Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:16Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:17Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:17Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:18Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:18Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:19Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:19Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:20Z Socks5() connect to […].onion:8333 failed: general failure
2021-03-03T13:42:20Z Socks5() connect to […].onion:8333 failed: general failure
…
```
(multiple messages per second, all `[…]` are short v2 onion addresses)

```
$ systemctl status tor
● tor.service - Anonymizing overlay network for TCP
     Loaded: loaded (/etc/systemd/system/tor.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2021-03-03 14:45:24 CET; 3min 0s ago
    Process: 158931 ExecStartPre=/opt/tor/bin/tor -f /opt/tor/etc/tor/torrc --verify-config (code=exited, status=0/SUCCESS)
   Main PID: 158962 (tor)
      Tasks: 1 (limit: 9367)
     Memory: 38.4M
     CGroup: /system.slice/tor.service
             └─158962 /opt/tor/bin/tor -f /opt/tor/etc/tor/torrc

Mar 03 14:48:20 tor[158962]: Mar 03 14:48:20.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:20 tor[158962]: Mar 03 14:48:20.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:21 tor[158962]: Mar 03 14:48:21.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:21 tor[158962]: Mar 03 14:48:21.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:22 tor[158962]: Mar 03 14:48:22.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:22 tor[158962]: Mar 03 14:48:22.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:23 tor[158962]: Mar 03 14:48:23.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:23 tor[158962]: Mar 03 14:48:23.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:24 tor[158962]: Mar 03 14:48:24.000 [warn] Invalid hostname [scrubbed]; rejecting
Mar 03 14:48:24 tor[158962]: Mar 03 14:48:24.000 [warn] Invalid hostname [scrubbed]; rejecting
```

I'll try to see if I can figure out what it's sending. Tor (current master) is otherwise successfully able to connect to hidden services, at least v3 ones.

Did Tor completely remove v2 support?

```
$ /opt/tor/bin/tor --version
Tor version 0.4.6.0-alpha-dev (git-8020ae02abb105db).
Tor is running on Linux with Libevent 2.1.11-stable, OpenSSL 1.1.1f, Zlib 1.2.11, Liblzma 5.2.4, Libzstd N/A and Glibc 2.31 as libc.
Tor compiled with GCC version 9.3.0
```
{{0x24,0x03,0x62,0x00,0x88,0x21,0x3d,0x68,0x19,0x5b,0x87,0xe9,0x68,0x19,0xd5,0xc8}, 8333},
    {{0x24,0x05,0x65,0x80,0x21,0x40,0x3a,0x00,0xc2,0x8c,0x09,0x83,0x36,0x4b,0x5d,0x70}, 8333},
    {{0x24,0x05,0x98,0x00,0xb9,0x11,0xa1,0x8a,0x58,0xeb,0xcd,0x3c,0x9d,0x82,0xea,0x4a}, 8333},
    {{0x24,0x05,0xaa,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40}, 8333},
    {{0x24,0x09,0x00,0x10,0xca,0x20,0x1d,0xf0,0x02,0x24,0xe8,0xff,0xfe,0x1f,0x60,0xd9}, 8333},
    {{0x24,0x09,0x8a,0x1e,0xa9,0xaf,0x36,0x60,0x1c,0x5a,0x5b,0x6b,0x8a,0x2d,0x98,0x48}, 8333},
    {{0x24,0x09,0x8a,0x1e,0xa9,0xaf,0x36,0x60,0x04,0x04,0x39,0xba,0x88,0xf2,0xe8,0xdf}, 8333},
    {{0x24,0x0b,0x00,0x10,0x91,0x41,0x04,0x00,0x49,0xb4,0x3a,0x2e,0x01,0xe5,0x08,0x4c}, 8333},
    {{0x24,0x0d,0x00,0x1a,0x07,0x59,0x60,0x00,0xa7,0xb1,0x45,0x1a,0x88,0x74,0xe1,0xac}, 8333},
    {{0x24,0x0d,0x00,0x1a,0x07,0x59,0x60,0x00,0xdd,0xab,0x31,0x41,0x4d,0xa0,0x88,0x78}, 8333},
    {{0x26,0x00,0x88,0x05,0x24,0x00,0x01,0x4e,0x12,0xdd,0xb1,0xff,0xfe,0xf2,0x30,0x13}, 8333},
    {{0x26,0x01,0x06,0x02,0x8d,0x80,0x0b,0x63,0xdc,0x3e,0x24,0xff,0xfe,0x92,0x05,0xeb}, 8333},
    {{0x26,0x02,0xff,0xb6,0x00,0x04,0x27,0x98,0xf8,0x16,0x3e,0xff,0xfe,0x2f,0x54,0x41}, 8333},
    {{0x26,0x02,0xff,0xb6,0x00,0x04,0x73,0x9e,0xf8,0x16,0x3e,0xff,0xfe,0x00,0xc2,0xb3}, 8333},
    {{0x26,0x02,0xff,0xb8,0x00,0x00,0x00,0x00,0x02,0x08,0x00,0x72,0x00,0x57,0x02,0x00}, 8333},
    {{0x26,0x04,0x13,0x80,0x41,0x11,0x93,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x26,0x04,0x43,0x00,0x00,0x0a,0x00,0x2e,0x02,0x1b,0x21,0xff,0xfe,0x11,0x03,0x92}, 8333},
    {{0x26,0x04,0x45,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x2e,0x06}, 8112},
    {{0x26,0x04,0x55,0x00,0x70,0x6a,0x40,0x00,0xfc,0x79,0xb9,0xbb,0x01,0xd7,0xc3,0x25}, 8333},
    {{0x26,0x04,0x55,0x00,0xc1,0x34,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xfc}, 32797},
    {{0x26,0x04,0x68,0x00,0x5e,0x11,0x01,0x62,0x5c,0x8f,0xd2,0xff,0xfe,0x26,0x14,0x6f}, 8333},
    {{0x26,0x05,0x4d,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x50}, 8333},
    {{0x26,0x05,0x64,0x00,0x00,0x20,0x13,0xbf,0xdf,0x1d,0x18,0x1c,0x83,0xbb,0x22,0xe8}, 8333},
    {{0x26,0x05,0xae,0x00,0x02,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x03}, 8333},
    {{0x26,0x05,0xc0,0x00,0x2a,0x0a,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02}, 8333},
    {{0x26,0x07,0xf2,0xc0,0xf0,0x0e,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x54}, 8333},
    {{0x26,0x07,0xf2,0xf8,0xad,0x40,0x0b,0xc1,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01}, 8333},
    {{0x26,0x07,0xf4,0x70,0x00,0x08,0x10,0x48,0xae,0x1f,0x6b,0xff,0xfe,0x70,0x72,0x40}, 8333},
    {{0x26,0x07,0xff,0x28,0x80,0x0f,0x00,0x97,0x02,0x25,0x90,0xff,0xfe,0x75,0x11,0x10}, 8333},
    {{0x26,0x20,0x01,0x1c,0x50,0x01,0x11,0x18,0xd2,0x67,0xe5,0xff,0xfe,0xe9,0xe6,0x73}, 8333},