Reverse lookup fails while querying IPv4 addresses when using Adguard Home server's IPv6 address

### Issue Details

* **Version of AdGuard Home server:**
* v0.107.3
* v0.108.0-b.3
* **How did you install AdGuard Home:**
* GitHub releases
* **How did you setup DNS configuration:**
* Router with upstream to the same router's dnsmasq DNS server on UDP/5353 for all private addresses.
* **If it's a router or IoT, please write device model:**
* Linksys WRT32X
* **CPU architecture:**
* ARM Cortex A9 MPCore
* **Operating system and version:**
* OpenWrt 19.07.8 r11364

### Expected Behavior
When performing reverse lookups on IPv4 addresses on a dual-stacked (IPv4 and IPv6) Adguard Home DNS server, the lookup fails while using Adguard Home DNS server's IPv6 address. Additional testing performed indicates:

* Forward lookup on FQDN using Adgaurd Home’s IPv4 address - Success
* Forward lookup on FQDN using Adgaurd Home’s IPv6 address - Success
* Reverse lookup on same host’s IPv4 address using Adgaurd Home’s IPv4 address - Success
* Reverse lookup on same host’s IPv4 address using Adgaurd Home’s IPv6 address - Fail
* Reverse lookup on same host’s IPv4 address using Router’s dnsmasq IPv6 address (Adguard Home upstream server for private addresses) - Success

### Actual Behavior
The PTR record for the IPv4 address query is not found. For example:
[Adguard_Home_Reverse_Lookup_Bug_v0.107.3.txt](https://github.com/AdguardTeam/AdGuardHome/files/8058025/Adguard_Home_Reverse_Lookup_Bug_v0.107.3.txt)
[Adguard_Home_Reverse_Lookup_Bug_v0.108.0-b.3.txt](https://github.com/AdguardTeam/AdGuardHome/files/8058027/Adguard_Home_Reverse_Lookup_Bug_v0.108.0-b.3.txt)
Host 26.1.168.192.in-addr.arpa. not found: 3(NXDOMAIN)

***********************************************************************************************************************
* Adguard -v --version
***********************************************************************************************************************
root@WiFi6514A-R:~# /opt/AdGuardHome/AdGuardHome -v --version
AdGuard Home
Version: v0.107.3
Channel: release
Go version: go1.16.12
Build time: 2022-01-25T13:39:29Z+0000
GOOS: linux
GOARCH: arm
GOARM: v7
Race: false
Dependencies:
github.com/AdguardTeam/dnsproxy@v0.40.7-0.20220124144147-a8868e34b0bf (sum: h1:lir9P3RJyZSZXUSw11px0SMIWfwjscbwpqWmm2rR76I=)
github.com/AdguardTeam/golibs@v0.10.4 (sum: h1:TMBkablZC0IZOpRgg9fzAKlxxNhSN2YJq7qbgtuZ7PQ=)
github.com/AdguardTeam/urlfilter@v0.15.2 (sum: h1:LZGgrm4l4Ys9eAqB+UUmZfiC6vHlDlYFhx0WXqo6LtQ=)
github.com/NYTimes/gziphandler@v1.1.1 (sum: h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=)
github.com/aead/chacha20@v0.0.0-20180709150244-8b13a72661da (sum: h1:KjTM2ks9d14ZYCvmHS9iAKVt9AyzRSqNU1qabPih5BY=)
github.com/aead/poly1305@v0.0.0-20180717145839-3fee0db0b635 (sum: h1:52m0LGchQBBVqJRyYYufQuIbVqRawmubW3OFGqK1ekw=)
github.com/ameshkov/dnscrypt/v2@v2.2.3 (sum: h1:X9UP5AHtwp46Ji+sGFfF/1Is6OPI/SjxLqhKpx0P5UI=)
github.com/ameshkov/dnsstamps@v1.0.3 (sum: h1:Srzik+J9mivH1alRACTbys2xOxs0lRH9qnTA7Y1OYVo=)
github.com/beefsack/go-rate@v0.0.0-20200827232406-6cde80facd47 (sum: h1:M57m0xQqZIhx7CEJgeLSvRFKEK1RjzRuIXiA3HfYU7g=)
github.com/cheekybits/genny@v1.0.0 (sum: h1:uGGa4nei+j20rOSeDeP5Of12XVm7TGUd4dJA9RDitfE=)
github.com/digineo/go-ipset/v2@v2.2.1 (sum: h1:k6skY+0fMqeUjjeWO/m5OuWPSZUAn7AucHMnQ1MX77g=)
github.com/fsnotify/fsnotify@v1.5.1 (sum: h1:mZcQUHVQUQWoPXXtuf9yuEXKudkV2sx1E06UadKWpgI=)
github.com/go-ping/ping@v0.0.0-20210506233800-ff8be3320020 (sum: h1:mdi6AbCEoKCA1xKCmp7UtRB5fvGFlP92PvlhxgdvXEw=)
github.com/google/go-cmp@v0.5.5 (sum: h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=)
github.com/google/gopacket@v1.1.19 (sum: h1:ves8RnFZPGiFnTS0uPQStjwru6uO6h+nlr9j6fL7kF8=)
github.com/google/renameio@v1.0.1 (sum: h1:Lh/jXZmvZxb0BBeSY5VKEfidcbcbenKjZFzM/q0fSeU=)
github.com/insomniacslk/dhcp@v0.0.0-20210310193751-cfd4d47082c2 (sum: h1:NpTIlXznCStsY88jU+Gh1Dy5dt/jYV4z4uU8h2TUOt4=)
github.com/josharian/native@v0.0.0-20200817173448-b6b71def0850 (sum: h1:uhL5Gw7BINiiPAo24A2sxkcDI0Jt/sqp1v5xQCniEFA=)
github.com/kardianos/service@v1.2.0 (sum: h1:bGuZ/epo3vrt8IPC7mnKQolqFeYJb7Cs8Rk4PSOBB/g=)
github.com/lucas-clemente/quic-go@v0.24.0 (sum: h1:ToR7SIIEdrgOhgVTHvPgdVRJfgVy+N0wQAagH7L4d5g=)
github.com/marten-seemann/qtls-go1-16@v0.1.4 (sum: h1:xbHbOGGhrenVtII6Co8akhLEdrawwB2iHl5yhJRpnco=)
github.com/mdlayher/ethernet@v0.0.0-20190606142754-0394541c37b7 (sum: h1:lez6TS6aAau+8wXUP3G9I3TGlmPFEq2CTxBaRqY6AGE=)
github.com/mdlayher/netlink@v1.4.0 (sum: h1:n3ARR+Fm0dDv37dj5wSWZXDKcy+U0zwcXS3zKMnSiT0=)
github.com/mdlayher/raw@v0.0.0-20210412142147-51b895745faf (sum: h1:InctQoB89TIkmgIFQeIL4KXNvWc1iebQXdZggqPSwL8=)
github.com/miekg/dns@v1.1.45 (sum: h1:g5fRIhm9nx7g8osrAvgb16QJfmyMsyOCb+J7LSv+Qzk=)
github.com/patrickmn/go-cache@v2.1.0+incompatible (sum: h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=)
github.com/pkg/errors@v0.9.1 (sum: h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=)
github.com/satori/go.uuid@v1.2.0 (sum: h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww=)
github.com/ti-mo/netfilter@v0.4.0 (sum: h1:rTN1nBYULDmMfDeBHZpKuNKX/bWEXQUhe02a/10orzg=)
github.com/u-root/u-root@v7.0.0+incompatible (sum: h1:u+KSS04pSxJGI5E7WE4Bs9+Zd75QjFv+REkjy/aoAc8=)
go.etcd.io/bbolt@v1.3.6 (sum: h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=)
golang.org/x/crypto@v0.0.0-20211215153901-e495a2d5b3d3 (sum: h1:0es+/5331RGQPcXlMfP+WrnIIS6dNnNRe0WB02W0F4M=)
golang.org/x/net@v0.0.0-20211216030914-fe4d6282115f (sum: h1:hEYJvxw1lSnWIl8X9ofsYMklzaDs90JI2az5YMd4fPM=)
golang.org/x/sync@v0.0.0-20210220032951-036812b2e83c (sum: h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=)
golang.org/x/sys@v0.0.0-20211216021012-1d35b9e2eb4e (sum: h1:fLOSk5Q00efkSvAm+4xcoXD+RRmLmmulPn5I3Y9F2EM=)
golang.org/x/text@v0.3.7 (sum: h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=)
gopkg.in/natefinch/lumberjack.v2@v2.0.0 (sum: h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=)
gopkg.in/yaml.v2@v2.4.0 (sum: h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=)
howett.net/plist@v0.0.0-20201203080718-1454fab16a06 (sum: h1:QDxUo/w2COstK1wIBYpzQlHX/NqaQTcf9jyz347nI58=)

***********************************************************************************************************************
* Forward lookup on FQDN using Adgaurd Home’s IPv4 address - Success
***********************************************************************************************************************
root@WiFi6514A-R:~# host -v -p 53 MyLaptop-WiFi.local 192.168.1.1
Trying "MyLaptop-WiFi.local"
Using domain server:
Name: 192.168.1.1
Address: 192.168.1.1#53
Aliases:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56159
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;MyLaptop-WiFi.local. IN A

;; ANSWER SECTION:
MyLaptop-WiFi.local. 10 IN A 192.168.1.26

Received 53 bytes from 192.168.1.1#53 in 0 ms
Trying "MyLaptop-WiFi.local"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55608
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;MyLaptop-WiFi.local. IN AAAA

;; ANSWER SECTION:
MyLaptop-WiFi.local. 10 IN AAAA 2600:6c54:XXXX:XXXX::1a

Received 65 bytes from 192.168.1.1#53 in 0 ms
Trying "MyLaptop-WiFi.local"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45305
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;MyLaptop-WiFi.local. IN MX

Received 37 bytes from 192.168.1.1#53 in 0 ms

***********************************************************************************************************************
* Forward lookup on FQDN using Adgaurd Home’s IPv6 address - Success
***********************************************************************************************************************
root@WiFi6514A-R:~# host -v -p 53 MyLaptop-WiFi.local 2600:6c54:XXXX:XXXX::1
Trying "MyLaptop-WiFi.local"
Using domain server:
Name: 2600:6c54:XXXX:XXXX::1
Address: 2600:6c54:XXXX:XXXX::1#53
Aliases:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26895
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;MyLaptop-WiFi.local. IN A

;; ANSWER SECTION:
MyLaptop-WiFi.local. 10 IN A 192.168.1.26

Received 53 bytes from 2600:6c54:XXXX:XXXX::1#53 in 9 ms
Trying "MyLaptop-WiFi.local"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63375
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;MyLaptop-WiFi.local. IN AAAA

;; ANSWER SECTION:
MyLaptop-WiFi.local. 10 IN AAAA 2600:6c54:XXXX:XXXX::1a

Received 65 bytes from 2600:6c54:XXXX:XXXX::1#53 in 0 ms
Trying "MyLaptop-WiFi.local"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8388
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;MyLaptop-WiFi.local. IN MX

Received 37 bytes from 2600:6c54:XXXX:XXXX::1#53 in 0 ms

***********************************************************************************************************************
* Reverse lookup on same host’s IPv4 address using Adgaurd Home’s IPv4 address - Success
***********************************************************************************************************************
root@WiFi6514A-R:~# host -v -p 53 192.168.1.26 192.168.1.1
Trying "26.1.168.192.in-addr.arpa"
Using domain server:
Name: 192.168.1.1
Address: 192.168.1.1#53
Aliases:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60938
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;26.1.168.192.in-addr.arpa. IN PTR

;; ANSWER SECTION:
26.1.168.192.in-addr.arpa. 10 IN PTR MyLaptop-WiFi.local.

Received 76 bytes from 192.168.1.1#53 in 0 ms

***********************************************************************************************************************
* Reverse lookup on same host’s IPv4 address using Adgaurd Home’s IPv6 address - Fail
***********************************************************************************************************************
root@WiFi6514A-R:~# host -v -p 53 192.168.1.26 2600:6c54:XXXX:XXXX::1
Trying "26.1.168.192.in-addr.arpa"
Using domain server:
Name: 2600:6c54:XXXX:XXXX::1
Address: 2600:6c54:XXXX:XXXX::1#53
Aliases:

Host 26.1.168.192.in-addr.arpa. not found: 3(NXDOMAIN)
Received 177 bytes from 2600:6c54:XXXX:XXXX::1#53 in 0 ms

***********************************************************************************************************************
* Reverse lookup on same host’s IPv4 address using Router’s dnsmasq IPv6 address (Adguard Home upstream server for private addresses) - Success
***********************************************************************************************************************
root@WiFi6514A-R:~# host -v -p 5353 192.168.1.26 2600:6c54:XXXX:XXXX::1
Trying "26.1.168.192.in-addr.arpa"
Using domain server:
Name: 2600:6c54:XXXX:XXXX::1
Address: 2600:6c54:XXXX:XXXX::1#5353
Aliases:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11848
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;26.1.168.192.in-addr.arpa. IN PTR

;; ANSWER SECTION:
26.1.168.192.in-addr.arpa. 0 IN PTR MyLaptop-WiFi.local.

Received 76 bytes from 2600:6c54:XXXX:XXXX::1#5353 in 0 ms
root@WiFi6514A-R:~#

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### Additional Information