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
```
{{0x20,0x01,0x41,0x00,0x00,0x00,0x00,0x64,0xdc,0xaf,0xaf,0xff,0xfe,0x00,0x67,0x07}, 8333},
    {{0x20,0x01,0x04,0x70,0x00,0x0a,0x0c,0x13,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x20,0x01,0x48,0x01,0x78,0x19,0x00,0x74,0xb7,0x45,0xb9,0xd5,0xff,0x10,0xa6,0x1a}, 8333},
    {{0x20,0x01,0x4b,0xa0,0xff,0xfa,0x00,0x5d,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x93}, 8333},
    {{0x20,0x01,0x06,0x10,0x19,0x08,0xff,0x01,0xf8,0x16,0x3e,0xff,0xfe,0x33,0x2e,0x32}, 8333},
    {{0x20,0x01,0x06,0x38,0xa0,0x00,0x41,0x40,0x00,0x00,0x00,0x00,0xff,0xff,0x01,0x91}, 8333},
    {{0x20,0x01,0x06,0x48,0x28,0x00,0x01,0x31,0x4b,0x1f,0xf6,0xfc,0x20,0xf7,0xf9,0x9f}, 8333},
    {{0x20,0x01,0x06,0x78,0x07,0xdc,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x20,0x01,0x06,0x78,0x0c,0xc8,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x10,0x00,0x88}, 20008},
    {{0x20,0x01,0x06,0x7c,0x12,0x20,0x08,0x0c,0x00,0x00,0x00,0x00,0x93,0xe5,0x0d,0xd2}, 8333},
    {{0x20,0x01,0x06,0x7c,0x12,0x20,0x08,0x0c,0xe5,0xdc,0xad,0x0c,0x92,0x89,0xc2,0x8f}, 8333},
    {{0x20,0x01,0x06,0x7c,0x16,0xdc,0x12,0x01,0x50,0x54,0x00,0xff,0xfe,0x17,0x4d,0xac}, 8333},
    {{0x20,0x01,0x06,0x7c,0x23,0x54,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x22}, 8333},
    {{0x20,0x01,0x06,0x7c,0x26,0xb4,0x00,0x12,0x7a,0xe3,0xb5,0xff,0xfe,0x04,0x6f,0x9c}, 8333},
    {{0x20,0x01,0x06,0x7c,0x02,0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x00,0xfa}, 8333},
    {{0x20,0x01,0x07,0x18,0x08,0x01,0x03,0x11,0x50,0x54,0x00,0xff,0xfe,0x19,0xc4,0x83}, 8333},
    {{0x20,0x01,0x08,0xd8,0x08,0x7c,0x7c,0x00,0x00,0x00,0x00,0x00,0x00,0x99,0x03,0xc1}, 8333},
    {{0x20,0x01,0x08,0xf1,0x14,0x04,0x37,0x00,0x8e,0x49,0x71,0x5a,0x2e,0x09,0xb6,0x34}, 9444},
    {{0x20,0x01,0x0b,0x07,0x5d,0x29,0x99,0xa5,0x19,0x4b,0x38,0x74,0xd6,0x5e,0xa9,0x0d}, 8333},
    {{0x20,0x01,0x0b,0xa8,0x01,0xf1,0xf0,0xfe,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x20,0x01,0x0b,0xc8,0x12,0x00,0x00,0x00,0xda,0xc4,0x97,0xff,0xfe,0x2a,0x35,0x54}, 20008},
    {{0x20,0x01,0x0d,0xa8,0x10,0x0d,0x00,0x22,0x10,0xfa,0xd8,0x5f,0x10,0xf2,0x21,0xfd}, 8333},
    {{0x20,0x01,0x0d,0xa8,0x80,0x01,0x7a,0x39,0xf0,0x35,0x00,0x7d,0xb9,0x9f,0xeb,0x79}, 8333},
    {{0x20,0x01,0x0e,0x42,0x01,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30}, 8333},
    {{0x24,0x00,0x24,0x12,0x01,0x03,0xc9,0x00,0x08,0x25,0x8f,0x20,0xea,0xff,0x65,0xc2}, 8333},
    {{0x24,0x00,0x40,0x52,0x0e,0x20,0x4f,0x00,0x69,0xfe,0xbb,0x33,0x7b,0x1c,0xa1,0xca}, 8333},
    {{0x24,0x01,0x18,0x00,0x78,0x00,0x01,0x05,0xbe,0x76,0x4e,0xff,0xfe,0x1c,0x0b,0x35}, 8333},
    {{0x24,0x01,0x39,0x00,0x00,0x02,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02}, 8333},
    {{0x24,0x01,0xb1,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x44,0x01,0x50}, 8333},
    {{0x24,0x01,0xd0,0x02,0x44,0x02,0x00,0x00,0x8f,0x28,0x59,0x1a,0x6e,0xa0,0xc6,0x83}, 8333},